python-peps/pep-0505/find-pep505.out

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:495
    if _hextobyte is None:
        _hextobyte = {(a + b).encode(): bytes([int(a + b, 16)])

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:522
    if encoding is None:
        encoding = 'utf-8'

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:524
    if errors is None:
        errors = 'replace'

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:854
    if _typeprog is None:
        _typeprog = re.compile('^([^/:]+):')

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:867
    if _hostprog is None:
        _hostprog = re.compile('^//([^/?]*)(.*)$')

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:883
    if _userprog is None:
        _userprog = re.compile('^(.*)@(.*)$')

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:894
    if _passwdprog is None:
        _passwdprog = re.compile('^([^:]*):(.*)$',re.S)

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:906
    if _portprog is None:
        _portprog = re.compile('^(.*):([0-9]*)$')

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:923
    if _nportprog is None:
        _nportprog = re.compile('^(.*):(.*)$')

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:941
    if _queryprog is None:
        _queryprog = re.compile('^(.*)\?([^?]*)$')

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:952
    if _tagprog is None:
        _tagprog = re.compile('^(.*)#([^#]*)$')

None-coalescing `if` block: /usr/lib/python3.4/urllib/parse.py:969
    if _valueprog is None:
        _valueprog = re.compile('^([^=]*)=(.*)$')

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/parse.py:396
        url = '//' + (netloc or '') + url

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:274
        if origin_req_host is None:
            origin_req_host = request_host(self)

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:727
        if proxies is None:
            proxies = getproxies()

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:739
        if proxy_type is None:
            proxy_type = orig_type

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:853
        if password_mgr is None:
            password_mgr = HTTPPasswordMgr()

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:935
        if passwd is None:
            passwd = HTTPPasswordMgr()

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:1234
        if cookiejar is None:
            cookiejar = http.cookiejar.CookieJar()

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:1373
        if port is None:
            port = ftplib.FTP_PORT

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:1550
        if proxies is None:
            proxies = getproxies()

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:2195
    if _localhost is None:
        _localhost = socket.gethostbyname('localhost')

None-coalescing `if` block: /usr/lib/python3.4/urllib/request.py:2223
    if _noheaders is None:
        _noheaders = email.message_from_string("")

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1344
                (mtype or 'text/plain', size, modified))

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1385
        user = user or ''

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1386
        passwd = passwd or ''

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1668
                garbage, path = splithost(path or "")

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1669
                path, garbage = splitquery(path or "")

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1670
                path, garbage = splitattr(path or "")

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1862
            (mtype or 'text/plain', size, modified))

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1891
        user = unquote(user or '')

[Possible] None-coalescing `or`: /usr/lib/python3.4/urllib/request.py:1892
        passwd = unquote(passwd or '')

[Possible] None-coalescing `or`: /usr/lib/python3.4/ssl.py:625
                v = self._sslobj.read(len or 1024)

None-coalescing `if` block: /usr/lib/python3.4/socket.py:217
        if buffering is None:
            buffering = -1

Safe navigation `if` block: /usr/lib/python3.4/socket.py:508
            if sock is not None:
                sock.close()

None-coalescing `if` block: /usr/lib/python3.4/ftplib.py:464
        if callback is None:
            callback = print_line

None-coalescing `if` block: /usr/lib/python3.4/ftplib.py:729
            if context is None:
                context = ssl._create_stdlib_context(self.ssl_version,

None-coalescing `if` block: /usr/lib/python3.4/http/server.py:424
        if message is None:
            message = shortmsg

None-coalescing `if` block: /usr/lib/python3.4/http/server.py:426
        if explain is None:
            explain = longmsg

None-coalescing `if` block: /usr/lib/python3.4/http/server.py:545
        if timestamp is None:
            timestamp = time.time()

None-coalescing `if` block: /usr/lib/python3.4/http/cookies.py:399
        if attrs is None:
            attrs = self._reserved

None-coalescing `if` block: /usr/lib/python3.4/http/client.py:1207
            if context is None:
                context = ssl._create_default_https_context()

None-coalescing `if` block: /usr/lib/python3.4/http/client.py:1210
            if check_hostname is None:
                check_hostname = context.check_hostname

None-coalescing `if` block: /usr/lib/python3.4/http/cookiejar.py:162
    if hr is None: hr = 0

None-coalescing `if` block: /usr/lib/python3.4/http/cookiejar.py:163
    if min is None: min = 0

None-coalescing `if` block: /usr/lib/python3.4/http/cookiejar.py:164
    if sec is None: sec = 0

None-coalescing `if` block: /usr/lib/python3.4/http/cookiejar.py:781
        if now is None: now = time.time()

None-coalescing `if` block: /usr/lib/python3.4/http/cookiejar.py:1221
        if policy is None:
            policy = DefaultCookiePolicy()

None-coalescing `if` block: /usr/lib/python3.4/http/cookiejar.py:1548
        if rfc2109_as_ns is None:
            rfc2109_as_ns = not self._policy.rfc2965

Safe navigation `if` block: /usr/lib/python3.4/http/cookiejar.py:269
    if m is not None:
        day, mon, yr, hr, min, sec, tz = m.groups()
    else:
        return None  # bad format

Safe navigation `if` block: /usr/lib/python3.4/http/cookiejar.py:312
    if m is not None:
        # XXX there's an extra bit of the timezone I'm ignoring here: is
        #   this the right thing to do?
        yr, mon, day, hr, min, sec, tz, _ = m.groups()
    else:
        return None  # bad format

Safe navigation `if` block: /usr/lib/python3.4/http/cookiejar.py:1895
                        if k is not None:
                            lc = k.lower()
                        else:
                            lc = None

None-coalescing `if` block: /usr/lib/python3.4/imaplib.py:744
        if ssl_context is None:
            ssl_context = ssl._create_stdlib_context()

None-coalescing `if` block: /usr/lib/python3.4/imaplib.py:855
        if dat is None:
            dat = b''

[Possible] None-coalescing `or`: /usr/lib/python3.4/imaplib.py:1469
    PASSWD = getpass.getpass("IMAP password for %s on %s: " % (USER, host or "localhost"))

None-coalescing `if` block: /usr/lib/python3.4/pyclbr.py:60
        if super is None:
            super = []

[Possible] None-coalescing `or`: /usr/lib/python3.4/pyclbr.py:85
    for key, value in _readmodule(module, path or []).items():

[Possible] None-coalescing `or`: /usr/lib/python3.4/pyclbr.py:97
    return _readmodule(module, path or [])

None-coalescing `if` block: /usr/lib/python3.4/tarfile.py:620
        if blockinfo is None:
            blockinfo = [(0, size)]

None-coalescing `if` block: /usr/lib/python3.4/tarfile.py:673
        if size is None:
            size = self.size - self.position

None-coalescing `if` block: /usr/lib/python3.4/tarfile.py:1764
        if arcname is None:
            arcname = name

None-coalescing `if` block: /usr/lib/python3.4/tarfile.py:1887
        if arcname is None:
            arcname = name

None-coalescing `if` block: /usr/lib/python3.4/tarfile.py:1970
        if members is None:
            members = self

[Possible] None-coalescing `or`: /usr/lib/python3.4/tarfile.py:351
        self.name     = name or ""

[Possible] None-coalescing `or`: /usr/lib/python3.4/tarfile.py:1557
            filemode = filemode or "r"

[Possible] None-coalescing `or`: /usr/lib/python3.4/tarfile.py:1558
            comptype = comptype or "tar"

[Possible] None-coalescing `or`: /usr/lib/python3.4/tarfile.py:1570
            filemode = filemode or "r"

[Possible] None-coalescing `or`: /usr/lib/python3.4/tarfile.py:1571
            comptype = comptype or "tar"

Safe navigation `if` block: /usr/lib/python3.4/tarfile.py:1199
        if match is not None:
            pax_headers["hdrcharset"] = match.group(1).decode("utf-8")

Safe navigation `if` block: /usr/lib/python3.4/tarfile.py:1758
        if fileobj is not None:
            name = fileobj.name

None-coalescing `if` block: /usr/lib/python3.4/pydoc.py:496
        if marginalia is None:
            marginalia = '<tt>' + '&nbsp;' * width + '</tt>'

None-coalescing `if` block: /usr/lib/python3.4/pydoc.py:672
        if docloc is not None:
            docloc = '<br><a href="%(docloc)s">Module Reference</a>' % locals()
        else:
            docloc = ''

None-coalescing `if` block: /usr/lib/python3.4/pydoc.py:1004
        if shadowed is None: shadowed = {}

None-coalescing `if` block: /usr/lib/python3.4/pydoc.py:1592
    if renderer is None:
        renderer = text

None-coalescing `if` block: /usr/lib/python3.4/pydoc.py:1639
    if done is None: done = {}

[Possible] None-coalescing `or`: /usr/lib/python3.4/pydoc.py:85
        dir = os.path.abspath(dir or '.')

[Possible] None-coalescing `or`: /usr/lib/python3.4/pydoc.py:491
    ''' % (bgcol, fgcol, title, fgcol, extras or '&nbsp;')

[Possible] None-coalescing `or`: /usr/lib/python3.4/pydoc.py:1961
            xrefs = (xrefs or '') + ' ' + more_xrefs

[Possible] None-coalescing `or`: /usr/lib/python3.4/pydoc.py:1992
            xrefs = (xrefs or '') + ' ' + more_xrefs

Safe navigation `if` block: /usr/lib/python3.4/pydoc.py:1618
        if output is None:
            pager(render_doc(thing, title, forceload))
        else:
            output.write(render_doc(thing, title, forceload, plaintext))

None-coalescing `if` block: /usr/lib/python3.4/hashlib.py:184
        if dklen is None:
            dklen = outer.digest_size

None-coalescing `if` block: /usr/lib/python3.4/os.py:583
    if env is None:
        env = environ

None-coalescing `if` block: /usr/lib/python3.4/os.py:610
    if path_list is None:
        path_list = defpath

[Possible] None-coalescing `or`: /usr/lib/python3.4/os.py:469
                if follow_symlinks or path.samestat(orig_st, stat(dirfd)):

Safe navigation `if` block: /usr/lib/python3.4/os.py:363
        if onerror is not None:
            onerror(err)

None-coalescing `if` block: /usr/lib/python3.4/tempfile.py:401
    if dir is None:
        dir = gettempdir()

None-coalescing `if` block: /usr/lib/python3.4/tempfile.py:425
    if dir is None:
        dir = gettempdir()

None-coalescing `if` block: /usr/lib/python3.4/tempfile.py:459
    if dir is None:
        dir = gettempdir()

None-coalescing `if` block: /usr/lib/python3.4/tempfile.py:589
    if dir is None:
        dir = gettempdir()

[Possible] None-coalescing `or`: /usr/lib/python3.4/ctypes/util.py:157
            return nums or [ sys.maxsize ]

None-coalescing `if` block: /usr/lib/python3.4/ctypes/__init__.py:146
    if typecode is None:
        # Most _type_ codes are the same as used in struct
        typecode = typ._type_

None-coalescing `if` block: /usr/lib/python3.4/ctypes/__init__.py:350
        if handle is None:
            self._handle = _dlopen(self._name, mode)
        else:
            self._handle = handle

None-coalescing `if` block: /usr/lib/python3.4/warnings.py:170
    if category is None:
        category = UserWarning

None-coalescing `if` block: /usr/lib/python3.4/warnings.py:211
    if registry is None:
        registry = {}

[Possible] None-coalescing `or`: /usr/lib/python3.4/warnings.py:208
        module = filename or "<unknown>"

None-coalescing ternary: /usr/lib/python3.4/warnings.py:26
    line = linecache.getline(filename, lineno) if line is None else line

None-coalescing ternary: /usr/lib/python3.4/warnings.py:323
        self._module = sys.modules['warnings'] if module is None else module

Safe navigation `if` block: /usr/lib/python3.4/dis.py:240
    if const_list is not None:
        argval = const_list[const_index]

None-coalescing `if` block: /usr/lib/python3.4/statistics.py:461
    if c is None:
        c = mean(data)

Safe navigation `if` block: /usr/lib/python3.4/_weakrefset.py:22
        if w is not None:
            w._iterating.add(self)

None-coalescing `if` block: /usr/lib/python3.4/zipfile.py:374
        if zip64 is None:
            zip64 = file_size > ZIP64_LIMIT or compress_size > ZIP64_LIMIT

None-coalescing `if` block: /usr/lib/python3.4/zipfile.py:1225
        if path is None:
            path = os.getcwd()

None-coalescing `if` block: /usr/lib/python3.4/zipfile.py:1236
        if members is None:
            members = self.namelist()

None-coalescing `if` block: /usr/lib/python3.4/zipfile.py:1331
        if arcname is None:
            arcname = filename

None-coalescing `if` block: /usr/lib/python3.4/zipfile.py:1340
        if compress_type is None:
            zinfo.compress_type = self.compression
        else:
            zinfo.compress_type = compress_type

None-coalescing `if` block: /usr/lib/python3.4/zipfile.py:1752
    if args is None:
        args = sys.argv[1:]

None-coalescing `if` block: /usr/lib/python3.4/pdb.py:1224
        if last is None:
            last = first + 10

None-coalescing `if` block: /usr/lib/python3.4/pdb.py:1585
    if t is None:
        # sys.exc_info() returns (type, value, traceback) if an exception is
        # being handled, otherwise it returns None
        t = sys.exc_info()[2]

[Possible] None-coalescing `or`: /usr/lib/python3.4/pdb.py:935
            count = int(arg or 1)

[Possible] None-coalescing `or`: /usr/lib/python3.4/pdb.py:955
            count = int(arg or 1)

None-coalescing `if` block: /usr/lib/python3.4/posixpath.py:445
    if start is None:
        start = curdir

Safe navigation `if` block: /usr/lib/python3.4/posixpath.py:300
            if environ is None:
                value = os.fsencode(os.environ[os.fsdecode(name)])
            else:
                value = environ[name]

Safe navigation `if` block: /usr/lib/python3.4/xml/sax/expatreader.py:223
        if bs is not None:
            bs.close()

None-coalescing `if` block: /usr/lib/python3.4/xml/sax/__init__.py:38
    if errorHandler is None:
        errorHandler = ErrorHandler()

None-coalescing `if` block: /usr/lib/python3.4/xml/sax/_exceptions.py:92
        if sysid is None:
            sysid = "<unknown>"

None-coalescing `if` block: /usr/lib/python3.4/xml/sax/_exceptions.py:95
        if linenum is None:
            linenum = "?"

None-coalescing `if` block: /usr/lib/python3.4/xml/sax/_exceptions.py:98
        if colnum is None:
            colnum = "?"

None-coalescing `if` block: /usr/lib/python3.4/xml/dom/pulldom.py:325
    if bufsize is None:
        bufsize = default_bufsize

[Possible] None-coalescing `or`: /usr/lib/python3.4/xml/dom/pulldom.py:44
        self._xmlns_attrs.append((prefix or 'xmlns', uri))

None-coalescing `if` block: /usr/lib/python3.4/xml/dom/expatbuilder.py:138
        if options is None:
            options = xmlbuilder.Options()

None-coalescing `if` block: /usr/lib/python3.4/xml/dom/xmlbuilder.py:359
        if snode is None:
            snode = self

None-coalescing `if` block: /usr/lib/python3.4/xml/etree/ElementTree.py:1225
        if events is None:
            events = ("end",)

None-coalescing `if` block: /usr/lib/python3.4/xml/etree/ElementTree.py:1389
        if element_factory is None:
            element_factory = Element

None-coalescing `if` block: /usr/lib/python3.4/xml/etree/ElementTree.py:1468
        if target is None:
            target = TreeBuilder()

[Possible] None-coalescing `or`: /usr/lib/python3.4/xml/etree/ElementTree.py:937
            if text or len(elem) or not short_empty_elements:

[Possible] None-coalescing `or`: /usr/lib/python3.4/xml/etree/ElementTree.py:1223
        self._parser = _parser or XMLParser(target=TreeBuilder())

[Possible] None-coalescing `or`: /usr/lib/python3.4/xml/etree/ElementTree.py:1523
                    append((event, (prefix or "", uri or "")))

[Possible] None-coalescing `or`: /usr/lib/python3.4/xml/etree/ElementTree.py:1523
                    append((event, (prefix or "", uri or "")))

None-coalescing `if` block: /usr/lib/python3.4/xml/etree/ElementInclude.py:100
    if loader is None:
        loader = default_loader

Safe navigation `and`: /usr/lib/python3.4/weakref.py:512
        obj = info and info.weakref()

Safe navigation `and`: /usr/lib/python3.4/weakref.py:520
        obj = info and info.weakref()

Safe navigation `and`: /usr/lib/python3.4/weakref.py:543
        obj = info and info.weakref()

None-coalescing `if` block: /usr/lib/python3.4/pprint.py:132
        if stream is not None:
            self._stream = stream
        else:
            self._stream = _sys.stdout

None-coalescing `if` block: /usr/lib/python3.4/pprint.py:410
    if object is None:
        object = [("string", (1, 2), [3, 4], {5: 6, 7: 8})] * 100000

None-coalescing `if` block: /usr/lib/python3.4/json/decoder.py:145
    if memo is None:
        memo = {}

Safe navigation `if` block: /usr/lib/python3.4/json/decoder.py:216
    if object_hook is not None:
        pairs = object_hook(pairs)

[Possible] None-coalescing `or`: /usr/lib/python3.4/json/scanner.py:52
                res = parse_float(integer + (frac or '') + (exp or ''))

[Possible] None-coalescing `or`: /usr/lib/python3.4/json/scanner.py:52
                res = parse_float(integer + (frac or '') + (exp or ''))

None-coalescing `if` block: /usr/lib/python3.4/json/__init__.py:231
    if cls is None:
        cls = JSONEncoder

None-coalescing `if` block: /usr/lib/python3.4/json/__init__.py:319
    if cls is None:
        cls = JSONDecoder

None-coalescing `if` block: /usr/lib/python3.4/json/encoder.py:147
        if separators is not None:
            self.item_separator, self.key_separator = separators
        elif indent is not None:

None-coalescing `if` block: /usr/lib/python3.4/timeit.py:243
    if args is None:
        args = sys.argv[1:]

Safe navigation `if` block: /usr/lib/python3.4/timeit.py:290
    if _wrap_timer is not None:
        timer = _wrap_timer(timer)

None-coalescing `if` block: /usr/lib/python3.4/smtplib.py:835
        if from_addr is None:
            # Prefer the sender field per RFC 2822:3.6.2.
            from_addr = (msg[header_prefix + 'Sender']

None-coalescing `if` block: /usr/lib/python3.4/profile.py:151
        if bias is None:
            bias = self.bias

None-coalescing `if` block: /usr/lib/python3.4/pickletools.py:2391
    if memo is None:
        memo = {}       # crude emulation of unpickler memo

None-coalescing ternary: /usr/lib/python3.4/pickletools.py:2241
                                 "<unknown>" if pos is None else pos,

None-coalescing `if` block: /usr/lib/python3.4/collections/__init__.py:852
        if m is None:
            m = {}

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/managers.py:357
            if exposed is None:
                exposed = public_methods(obj)

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/managers.py:444
        if authkey is None:
            authkey = process.current_process().authkey

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/managers.py:620
        if proxytype is None:
            proxytype = AutoProxy

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/managers.py:896
    if authkey is None:
        authkey = process.current_process().authkey

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/managers.py:452
        self._ctx = ctx or get_context()

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/managers.py:623
        exposed = exposed or getattr(proxytype, '_exposed_', None)

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/managers.py:625
        method_to_typeid = method_to_typeid or \
                           getattr(proxytype, '_method_to_typeid_', None)

Safe navigation `and`: /usr/lib/python3.4/multiprocessing/managers.py:245
                    typeid = gettypeid and gettypeid.get(methodname, None)

Safe navigation `if` block: /usr/lib/python3.4/multiprocessing/managers.py:351
            if callable is None:
                assert len(args) == 1 and not kwds
                obj = args[0]
            else:
                obj = callable(*args, **kwds)

Safe navigation `if` block: /usr/lib/python3.4/multiprocessing/managers.py:513
        if initializer is not None:
            initializer(*initargs)

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/synchronize.py:52
        if ctx is None:
            ctx = context._default_context.get_context()

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/synchronize.py:214
        self._lock = lock or ctx.RLock()

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/util.py:160
        self._kwargs = kwargs or {}

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/connection.py:194
        if size is None:
            size = n - offset

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/connection.py:441
        address = address or arbitrary_address(family)

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/connection.py:490
    family = family or address_type(address)

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/sharedctypes.py:77
        ctx = ctx or get_context()

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/sharedctypes.py:91
        ctx = ctx or get_context()

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/sharedctypes.py:104
    ctx = ctx or get_context()

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/sharedctypes.py:186
            ctx = ctx or get_context(force=True)

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/pool.py:158
        if processes is None:
            processes = os.cpu_count() or 1

[Possible] None-coalescing `or`: /usr/lib/python3.4/multiprocessing/pool.py:149
        self._ctx = context or get_context()

Safe navigation `if` block: /usr/lib/python3.4/multiprocessing/pool.py:102
    if initializer is not None:
        initializer(*initargs)

None-coalescing `if` block: /usr/lib/python3.4/multiprocessing/spawn.py:174
    if main_mod_name is not None:
        d['init_main_from_name'] = main_mod_name
    elif sys.platform != 'win32' or (not WINEXE and not WINSERVICE):

None-coalescing `if` block: /usr/lib/python3.4/sre_parse.py:92
        if data is None:
            data = []

None-coalescing `if` block: /usr/lib/python3.4/sre_parse.py:392
            if prefix is None:
                prefix = item[0]

None-coalescing `if` block: /usr/lib/python3.4/sre_parse.py:755
    if pattern is None:
        pattern = Pattern()

Safe navigation ternary: /usr/lib/python3.4/sre_parse.py:856
        literals = [None if s is None else s.encode('latin-1') for s in literals]

None-coalescing `if` block: /usr/lib/python3.4/locale.py:497
        if language is None:
            language = 'C'

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1619
    print('Language: ', lang or '(undefined)')

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1620
    print('Encoding: ', enc or '(undefined)')

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1628
        print('   Language: ', lang or '(undefined)')

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1629
        print('   Encoding: ', enc or '(undefined)')

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1639
        print('   Language: ', lang or '(undefined)')

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1640
        print('   Encoding: ', enc or '(undefined)')

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1656
            print('   Language: ', lang or '(undefined)')

[Possible] None-coalescing `or`: /usr/lib/python3.4/locale.py:1657
            print('   Encoding: ', enc or '(undefined)')

None-coalescing `if` block: /usr/lib/python3.4/xmlrpc/server.py:214
        if name is None:
            name = function.__name__

[Possible] None-coalescing `or`: /usr/lib/python3.4/xmlrpc/server.py:168
        self.encoding = encoding or 'utf-8'

[Possible] None-coalescing `or`: /usr/lib/python3.4/xmlrpc/server.py:604
        self.encoding = encoding or 'utf-8'

Safe navigation `if` block: /usr/lib/python3.4/xmlrpc/server.py:253
            if dispatch_method is not None:
                response = dispatch_method(method, params)
            else:
                response = self._dispatch(method, params)

None-coalescing `if` block: /usr/lib/python3.4/xmlrpc/client.py:387
        if data is None:
            data = b""

[Possible] None-coalescing `or`: /usr/lib/python3.4/xmlrpc/client.py:1353
            None, context=self.context, **(x509 or {}))

[Possible] None-coalescing `or`: /usr/lib/python3.4/xmlrpc/client.py:1420
        self.__encoding = encoding or 'utf-8'

[Possible] None-coalescing `or`: /usr/lib/python3.4/nntplib.py:173
            parts.append(v.decode(enc or 'ascii'))

[Possible] None-coalescing `or`: /usr/lib/python3.4/nntplib.py:828
            cmd += ' {0}-{1}'.format(start, end or '')

None-coalescing `if` block: /usr/lib/python3.4/gettext.py:355
    if localedir is None:
        localedir = _default_localedir

None-coalescing `if` block: /usr/lib/python3.4/gettext.py:410
    if class_ is None:
        class_ = GNUTranslations

None-coalescing `if` block: /usr/lib/python3.4/gettext.py:432
        if result is None:
            result = t

Safe navigation `if` block: /usr/lib/python3.4/gettext.py:432
        if result is None:
            result = t
        else:
            result.add_fallback(t)

[Possible] None-coalescing `or`: /usr/lib/python3.4/wsgiref/headers.py:19
        if quote or tspecials.search(value):

Safe navigation `if` block: /usr/lib/python3.4/pathlib.py:919
        if template is not None:
            self._accessor = template._accessor
        else:
            self._accessor = _normal_accessor

None-coalescing `if` block: /usr/lib/python3.4/email/mime/audio.py:67
        if _subtype is None:
            _subtype = _whatsnd(_audiodata)

None-coalescing `if` block: /usr/lib/python3.4/email/mime/image.py:40
        if _subtype is None:
            _subtype = imghdr.what(None, _imagedata)

None-coalescing `if` block: /usr/lib/python3.4/email/contentmanager.py:47
            if full_path_for_error is None:
                full_path_for_error = full_path

None-coalescing ternary: /usr/lib/python3.4/email/contentmanager.py:209
        cte = '8bit' if cte is None else cte

None-coalescing `if` block: /usr/lib/python3.4/email/header.py:209
        if charset is None:
            charset = USASCII

None-coalescing `if` block: /usr/lib/python3.4/email/header.py:218
        if maxlinelen is None:
            maxlinelen = MAXLINELEN

None-coalescing `if` block: /usr/lib/python3.4/email/header.py:289
        if charset is None:
            charset = self._charset

None-coalescing `if` block: /usr/lib/python3.4/email/header.py:350
        if maxlinelen is None:
            maxlinelen = self._maxlinelen

None-coalescing `if` block: /usr/lib/python3.4/email/header.py:572
        if startval is None:
            startval = []

None-coalescing `if` block: /usr/lib/python3.4/email/utils.py:156
    if timeval is None:
        timeval = time.time()

None-coalescing `if` block: /usr/lib/python3.4/email/utils.py:216
    if idstring is None:
        idstring = ''

None-coalescing `if` block: /usr/lib/python3.4/email/utils.py:220
    if domain is None:
        domain = socket.getfqdn()

None-coalescing `if` block: /usr/lib/python3.4/email/utils.py:272
    if language is None:
        language = ''

None-coalescing `if` block: /usr/lib/python3.4/email/utils.py:344
    if charset is None:
        # Issue 17369: if charset/lang is None, decode_rfc2231 couldn't parse
        # the value, so use the fallback_charset.
        charset = fallback_charset

[Possible] None-coalescing `or`: /usr/lib/python3.4/email/utils.py:269
    s = urllib.parse.quote(s, safe='', encoding=charset or 'ascii')

None-coalescing `if` block: /usr/lib/python3.4/email/generator.py:257
        if subparts is None:
            subparts = []

None-coalescing `if` block: /usr/lib/python3.4/email/generator.py:475
        if fmt is None:
            self._fmt = _FMT
        else:
            self._fmt = fmt

Safe navigation `if` block: /usr/lib/python3.4/email/generator.py:191
        if meth is None:
            self._write_headers(msg)
        else:
            meth(self)

None-coalescing `if` block: /usr/lib/python3.4/email/_parseaddr.py:460
        if atomends is None:
            atomends = self.atomends

None-coalescing `if` block: /usr/lib/python3.4/email/iterators.py:61
    if fp is None:
        fp = sys.stdout

None-coalescing `if` block: /usr/lib/python3.4/email/message.py:1068
        if content_manager is None:
            content_manager = self.policy.content_manager

None-coalescing `if` block: /usr/lib/python3.4/email/message.py:1073
        if content_manager is None:
            content_manager = self.policy.content_manager

[Possible] None-coalescing `or`: /usr/lib/python3.4/email/message.py:67
        if quote or tspecials.search(value):

None-coalescing ternary: /usr/lib/python3.4/email/message.py:153
        policy = self.policy if policy is None else policy

None-coalescing ternary: /usr/lib/python3.4/email/message.py:176
        policy = self.policy if policy is None else policy

None-coalescing `if` block: /usr/lib/python3.4/email/_header_value_parser.py:130
        if stoken is None:
            stoken = str(token)

Safe navigation `and`: /usr/lib/python3.4/email/_header_value_parser.py:2591
    while value and value[0].isdigit():

None-coalescing `if` block: /usr/lib/python3.4/concurrent/futures/process.py:334
        if max_workers is None:
            self._max_workers = os.cpu_count() or 1
        else:
            self._max_workers = max_workers

None-coalescing `if` block: /usr/lib/python3.4/threading.py:211
        if lock is None:
            lock = RLock()

None-coalescing `if` block: /usr/lib/python3.4/threading.py:604
        if timeout is None:
            timeout = self._timeout

None-coalescing `if` block: /usr/lib/python3.4/threading.py:785
        if kwargs is None:
            kwargs = {}

None-coalescing `if` block: /usr/lib/python3.4/threading.py:791
        if daemon is not None:
            self._daemonic = daemon
        else:
            self._daemonic = current_thread().daemon

[Possible] None-coalescing `or`: /usr/lib/python3.4/threading.py:788
        self._name = str(name or _newname())

None-coalescing ternary: /usr/lib/python3.4/threading.py:1175
        self.args = args if args is not None else []

None-coalescing ternary: /usr/lib/python3.4/threading.py:1176
        self.kwargs = kwargs if kwargs is not None else {}

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:363
        if frame is None:
            frame = sys._getframe().f_back

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:469
        if options is None: options = {}

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:1187
        if verbose is None:
            verbose = '-v' in sys.argv

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:1428
        if compileflags is None:
            compileflags = _extract_future_flags(test.globs)

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:1490
        if verbose is None:
            verbose = self._verbose

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:1916
    if m is None:
        # DWA - m will still be None if this wasn't invoked from the command
        # line, in which case the following TypeError is about as good an error
        # as we should expect
        m = sys.modules.get('__main__')

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:1927
    if name is None:
        name = m.__name__

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:1944
    if master is None:
        master = runner

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:2042
    if name is None:
        name = os.path.basename(filename)

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:2046
    if globs is None:
        globs = {}

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:2067
    if master is None:
        master = runner

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:2359
    if test_finder is None:
        test_finder = DocTestFinder()

None-coalescing `if` block: /usr/lib/python3.4/doctest.py:2412
    if globs is None:
        globs = {}

[Possible] None-coalescing `or`: /usr/lib/python3.4/doctest.py:1186
        self._checker = checker or OutputChecker()

[Possible] None-coalescing `or`: /usr/lib/python3.4/doctest.py:2039
                                    encoding or "utf-8")

[Possible] None-coalescing `or`: /usr/lib/python3.4/doctest.py:2423
                               encoding or "utf-8")

Safe navigation `if` block: /usr/lib/python3.4/doctest.py:908
        if globs is None:
            if module is None:
                globs = {}
            else:
                globs = module.__dict__.copy()
        else:
            globs = globs.copy()

Safe navigation `if` block: /usr/lib/python3.4/doctest.py:1944
    if master is None:
        master = runner
    else:
        master.merge(runner)

Safe navigation `if` block: /usr/lib/python3.4/doctest.py:2046
    if globs is None:
        globs = {}
    else:
        globs = globs.copy()

Safe navigation `if` block: /usr/lib/python3.4/doctest.py:2067
    if master is None:
        master = runner
    else:
        master.merge(runner)

Safe navigation `if` block: /usr/lib/python3.4/doctest.py:2412
    if globs is None:
        globs = {}
    else:
        globs = globs.copy()

None-coalescing `if` block: /usr/lib/python3.4/asyncore.py:126
    if map is None:
        map = socket_map

None-coalescing `if` block: /usr/lib/python3.4/asyncore.py:169
    if map is None:
        map = socket_map

None-coalescing `if` block: /usr/lib/python3.4/asyncore.py:198
    if map is None:
        map = socket_map

None-coalescing `if` block: /usr/lib/python3.4/asyncore.py:226
        if map is None:
            self._map = socket_map
        else:
            self._map = map

None-coalescing `if` block: /usr/lib/python3.4/asyncore.py:274
        if map is None:
            map = self._map

None-coalescing `if` block: /usr/lib/python3.4/asyncore.py:280
        if map is None:
            map = self._map

None-coalescing `if` block: /usr/lib/python3.4/asyncore.py:576
    if map is None:
        map = socket_map

None-coalescing `if` block: /usr/lib/python3.4/bdb.py:211
        if lineno is None:
            lineno = frame.f_lineno + 1

None-coalescing `if` block: /usr/lib/python3.4/bdb.py:243
        if frame is None:
            frame = sys._getframe().f_back

None-coalescing `if` block: /usr/lib/python3.4/bdb.py:424
        if locals is None:
            locals = globals

None-coalescing `if` block: /usr/lib/python3.4/bdb.py:442
        if locals is None:
            locals = globals

None-coalescing `if` block: /usr/lib/python3.4/bdb.py:536
        if out is None:
            out = sys.stdout

None-coalescing `if` block: /usr/lib/python3.4/cgi.py:140
    if fp is None:
        fp = sys.stdin

None-coalescing `if` block: /usr/lib/python3.4/shelve.py:87
        if protocol is None:
            protocol = 3

None-coalescing `if` block: /usr/lib/python3.4/tkinter/filedialog.py:52
        if title is None: title = self.title

[Possible] None-coalescing `or`: /usr/lib/python3.4/tkinter/filedialog.py:218
        self.filter.insert(END, os.path.join(dir or os.curdir, pat or "*"))

None-coalescing `if` block: /usr/lib/python3.4/tkinter/__init__.py:489
        if window is None:
            window = self

None-coalescing `if` block: /usr/lib/python3.4/tkinter/__init__.py:497
        if window is None:
            window = self

None-coalescing `if` block: /usr/lib/python3.4/tkinter/__init__.py:2782
        if index2 is None:
            index2 = index1

[Possible] None-coalescing `or`: /usr/lib/python3.4/tkinter/ttk.py:184
        opts = opts or {}

[Possible] None-coalescing `or`: /usr/lib/python3.4/tkinter/ttk.py:665
        Widget.__init__(self, master, widget or "ttk::entry", kw)

[Possible] None-coalescing `or`: /usr/lib/python3.4/tkinter/ttk.py:1490
        self._variable = variable or tkinter.IntVar(master)

None-coalescing `if` block: /usr/lib/python3.4/code.py:33
        if locals is None:
            locals = {"__name__": "__console__", "__doc__": None}

None-coalescing `if` block: /usr/lib/python3.4/code.py:291
    if readfunc is not None:
        console.raw_input = readfunc
    else:
        try:

Safe navigation `if` block: /usr/lib/python3.4/plistlib.py:331
        if handler is not None:
            handler(attrs)

Safe navigation `if` block: /usr/lib/python3.4/plistlib.py:336
        if handler is not None:
            handler()

None-coalescing `if` block: /usr/lib/python3.4/uu.py:72
        if name is None:
            name = '-'

None-coalescing `if` block: /usr/lib/python3.4/uu.py:74
        if mode is None:
            mode = 0o666

None-coalescing `if` block: /usr/lib/python3.4/uu.py:124
        if mode is None:
            mode = int(hdrfields[1], 8)

None-coalescing `if` block: /usr/lib/python3.4/contextlib.py:42
        if doc is None:
            doc = type(self).__doc__

None-coalescing `if` block: /usr/lib/python3.4/subprocess.py:764
        if bufsize is None:
            bufsize = -1  # Restore default

None-coalescing `if` block: /usr/lib/python3.4/runpy.py:179
    if run_name is None:
        run_name = mod_name

None-coalescing `if` block: /usr/lib/python3.4/runpy.py:226
    if run_name is None:
        run_name = "<run_path>"

Safe navigation ternary: /usr/lib/python3.4/runpy.py:92
    fname = script_name if mod_spec is None else mod_spec.origin

[Possible] None-coalescing `or`: /usr/lib/python3.4/cgitb.py:271
        info = info or sys.exc_info()

[Possible] None-coalescing `or`: /usr/lib/python3.4/asyncio/unix_events.py:418
        if not (is_socket or
                stat.S_ISFIFO(mode) or
                stat.S_ISCHR(mode)):

Safe navigation `if` block: /usr/lib/python3.4/asyncio/unix_events.py:939
            if callback is None:
                logger.warning(
                    "Caught subprocess termination from unknown pid: "
                    "%d -> %d", pid, returncode)
            else:
                callback(pid, returncode, *args)

Safe navigation `if` block: /usr/lib/python3.4/asyncio/proactor_events.py:475
            if f is not None:
                f.result()  # may raise

None-coalescing `if` block: /usr/lib/python3.4/asyncio/futures.py:150
        if loop is None:
            self._loop = events.get_event_loop()
        else:
            self._loop = loop

None-coalescing `if` block: /usr/lib/python3.4/asyncio/futures.py:397
    if loop is None:
        loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/streams.py:58
    if loop is None:
        loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/streams.py:92
    if loop is None:
        loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/streams.py:148
        if loop is None:
            self._loop = events.get_event_loop()
        else:
            self._loop = loop

None-coalescing `if` block: /usr/lib/python3.4/asyncio/streams.py:311
        if loop is None:
            self._loop = events.get_event_loop()
        else:
            self._loop = loop

None-coalescing `if` block: /usr/lib/python3.4/asyncio/tasks.py:56
        if loop is None:
            loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/tasks.py:66
        if loop is None:
            loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/tasks.py:327
    if loop is None:
        loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/tasks.py:354
    if loop is None:
        loop = events.get_event_loop()

None-coalescing ternary: /usr/lib/python3.4/asyncio/tasks.py:451
    loop = loop if loop is not None else events.get_event_loop()

Safe navigation `if` block: /usr/lib/python3.4/asyncio/tasks.py:417
        if timeout_handle is not None:
            timeout_handle.cancel()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/subprocess.py:192
    if loop is None:
        loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/subprocess.py:206
    if loop is None:
        loop = events.get_event_loop()

Safe navigation `if` block: /usr/lib/python3.4/asyncio/subprocess.py:69
        if reader is not None:
            reader.feed_data(data)

None-coalescing `if` block: /usr/lib/python3.4/asyncio/queues.py:42
        if loop is None:
            self._loop = events.get_event_loop()
        else:
            self._loop = loop

Safe navigation `if` block: /usr/lib/python3.4/asyncio/base_events.py:729
                if sock is not None:
                    sock.close()

Safe navigation `if` block: /usr/lib/python3.4/asyncio/base_events.py:733
                if sock is not None:
                    sock.close()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/windows_events.py:302
        if proactor is None:
            proactor = IocpProactor()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/transports.py:16
        if extra is None:
            extra = {}

None-coalescing `if` block: /usr/lib/python3.4/asyncio/transports.py:287
        if low is None:
            low = high // 4

None-coalescing `if` block: /usr/lib/python3.4/asyncio/locks.py:99
        if loop is not None:
            self._loop = loop
        else:
            self._loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/locks.py:194
        if loop is not None:
            self._loop = loop
        else:
            self._loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/locks.py:259
        if loop is not None:
            self._loop = loop
        else:
            self._loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/locks.py:264
        if lock is None:
            lock = Lock(loop=self._loop)

None-coalescing `if` block: /usr/lib/python3.4/asyncio/locks.py:391
        if loop is not None:
            self._loop = loop
        else:
            self._loop = events.get_event_loop()

None-coalescing `if` block: /usr/lib/python3.4/asyncio/selector_events.py:51
        if selector is None:
            selector = selectors.DefaultSelector()

Safe navigation `if` block: /usr/lib/python3.4/asyncio/selector_events.py:242
            if reader is not None:
                reader.cancel()

Safe navigation `if` block: /usr/lib/python3.4/asyncio/selector_events.py:280
            if writer is not None:
                writer.cancel()

None-coalescing `if` block: /usr/lib/python3.4/copy.py:143
    if memo is None:
        memo = {}

None-coalescing `if` block: /usr/lib/python3.4/copy.py:276
    if memo is None:
        memo = {}

None-coalescing `if` block: /usr/lib/python3.4/enum.py:333
        if module is None:
            _make_class_unpicklable(enum_class)
        else:
            enum_class.__module__ = module

[Possible] None-coalescing `or`: /usr/lib/python3.4/string.py:44
    return (sep or ' ').join(x.capitalize() for x in s.split(sep))

None-coalescing `if` block: /usr/lib/python3.4/platform.py:1251
    if sys_version is None:
        sys_version = sys.version

Safe navigation ternary: /usr/lib/python3.4/platform.py:181
            s.decode('latin1') if s is not None else s

None-coalescing `if` block: /usr/lib/python3.4/_osx_support.py:35
    if path is None:
        path = os.environ['PATH']

None-coalescing `if` block: /usr/lib/python3.4/codecs.py:925
    if file_encoding is None:
        file_encoding = data_encoding

[Possible] None-coalescing `or`: /usr/lib/python3.4/codecs.py:249
        self.buffer = state or ""

[Possible] None-coalescing `or`: /usr/lib/python3.4/codecs.py:547
        readsize = size or 72

None-coalescing `if` block: /usr/lib/python3.4/textwrap.py:419
        if margin is None:
            margin = indent

None-coalescing `if` block: /usr/lib/python3.4/trace.py:505
        if globals is None: globals = {}

None-coalescing `if` block: /usr/lib/python3.4/trace.py:506
        if locals is None: locals = {}

None-coalescing `if` block: /usr/lib/python3.4/trace.py:659
    if argv is None:
        argv = sys.argv

None-coalescing `if` block: /usr/lib/python3.4/poplib.py:387
        if context is None:
            context = ssl._create_stdlib_context()

None-coalescing `if` block: /usr/lib/python3.4/modulefinder.py:75
        if path is None:
            path = sys.path

Safe navigation `and`: /usr/lib/python3.4/modulefinder.py:267
                                                   parent and parent.__path__, parent)

None-coalescing `if` block: /usr/lib/python3.4/base64.py:206
    if _b32rev is None:
        _b32rev = {v: k for k, v in enumerate(_b32alphabet)}

None-coalescing `if` block: /usr/lib/python3.4/gzip.py:186
        if mode is None:
            mode = getattr(fileobj, 'mode', 'rb')

None-coalescing `if` block: /usr/lib/python3.4/gzip.py:269
        if mtime is None:
            mtime = time.time()

[Possible] None-coalescing `or`: /usr/lib/python3.4/gzip.py:181
            fileobj = self.myfileobj = builtins.open(filename, mode or 'rb')

None-coalescing `if` block: /usr/lib/python3.4/optparse.py:1040
        if option is None:
            option = self._long_opt.get(opt_str)

None-coalescing `if` block: /usr/lib/python3.4/optparse.py:1195
        if formatter is None:
            formatter = IndentedHelpFormatter()

None-coalescing `if` block: /usr/lib/python3.4/optparse.py:1369
        if values is None:
            values = self.get_default_values()

None-coalescing `if` block: /usr/lib/python3.4/optparse.py:1607
        if formatter is None:
            formatter = self.formatter

None-coalescing `if` block: /usr/lib/python3.4/optparse.py:1627
        if formatter is None:
            formatter = self.formatter

None-coalescing `if` block: /usr/lib/python3.4/optparse.py:1644
        if file is None:
            file = sys.stdout

Safe navigation `if` block: /usr/lib/python3.4/test/pystone.py:174
    if PtrGlb is not None:
        PtrParOut = PtrGlb.PtrComp
    else:
        IntGlob = 100

[Possible] None-coalescing `or`: /usr/lib/python3.4/test/regrtest.py:1514
    return path or os.path.dirname(__file__) or os.curdir

Safe navigation `if` block: /usr/lib/python3.4/test/regrtest.py:1475
        if stream is not None:
            stream.flush()

None-coalescing `if` block: /usr/lib/python3.4/test/support/__init__.py:200
    if pattern is None:
        pattern = "test*"

None-coalescing `if` block: /usr/lib/python3.4/test/support/__init__.py:1228
            if v is None:
                if k in self._environ:
                    del self._environ[k]
            else:
                self._environ[k] = v

None-coalescing `if` block: /usr/lib/python3.4/test/support/__init__.py:1527
                if orig_tz is None:
                    del os.environ['TZ']
                else:
                    os.environ['TZ'] = orig_tz

None-coalescing `if` block: /usr/lib/python3.4/test/support/__init__.py:1838
    if verbosity is None:
        verbosity = verbose

[Possible] None-coalescing `or`: /usr/lib/python3.4/test/support/__init__.py:305
            dirname = dirname or '.'

None-coalescing `if` block: /usr/lib/python3.4/argparse.py:299
        if prefix is None:
            prefix = _('usage: ')

None-coalescing `if` block: /usr/lib/python3.4/argparse.py:1047
        if version is None:
            version = parser.version

None-coalescing `if` block: /usr/lib/python3.4/argparse.py:1629
        if prog is None:
            prog = _os.path.basename(_sys.argv[0])

None-coalescing `if` block: /usr/lib/python3.4/argparse.py:1744
        if args is None:
            # args default to the system args
            args = _sys.argv[1:]

None-coalescing `if` block: /usr/lib/python3.4/argparse.py:1752
        if namespace is None:
            namespace = Namespace()

None-coalescing `if` block: /usr/lib/python3.4/argparse.py:2361
        if file is None:
            file = _sys.stdout

None-coalescing `if` block: /usr/lib/python3.4/argparse.py:2366
        if file is None:
            file = _sys.stdout

None-coalescing `if` block: /usr/lib/python3.4/logging/handlers.py:816
        if use_socktype is None:
            use_socktype = socket.SOCK_DGRAM

None-coalescing `if` block: /usr/lib/python3.4/logging/__init__.py:951
        if stream is None:
            stream = sys.stderr

Safe navigation `if` block: /usr/lib/python3.4/logging/__init__.py:1351
        if f is not None:
            f = f.f_back

Safe navigation `if` block: /usr/lib/python3.4/unittest/suite.py:177
        if previousClass is not None:
            previousModule = previousClass.__module__

None-coalescing `if` block: /usr/lib/python3.4/unittest/main.py:68
        if argv is None:
            argv = sys.argv

Safe navigation ternary: /usr/lib/python3.4/unittest/main.py:224
        loader = self.testLoader if Loader is None else Loader()

None-coalescing `if` block: /usr/lib/python3.4/unittest/mock.py:380
        if _new_parent is None:
            _new_parent = parent

None-coalescing `if` block: /usr/lib/python3.4/unittest/mock.py:392
        if _eat_self is None:
            _eat_self = parent is not None

None-coalescing `if` block: /usr/lib/python3.4/unittest/mock.py:2294
    if mock is None:
        mock = MagicMock(name='open', spec=open)

Safe navigation `and`: /usr/lib/python3.4/unittest/mock.py:452
            _spec_signature = res and res[1]

Safe navigation `if` block: /usr/lib/python3.4/unittest/mock.py:1765
    if side_effector is not None:
        method.side_effect = side_effector(mock)

None-coalescing `if` block: /usr/lib/python3.4/unittest/case.py:227
            if first_matching is None:
                first_matching = w

[Possible] None-coalescing `or`: /usr/lib/python3.4/unittest/case.py:1267
            msg = msg or "Regex didn't match"

[Possible] None-coalescing `or`: /usr/lib/python3.4/unittest/case.py:1277
            msg = msg or "Regex matched"

Safe navigation `if` block: /usr/lib/python3.4/unittest/case.py:472
        if addSkip is not None:
            addSkip(test_case, reason)
        else:
            warnings.warn("TestResult has no addSkip method, skips not reported",

Safe navigation `if` block: /usr/lib/python3.4/unittest/case.py:491
        if parent is None:
            params_map = collections.ChainMap(params)
        else:
            params_map = parent.params.new_child(params)

None-coalescing `if` block: /usr/lib/python3.4/unittest/runner.py:130
        if stream is None:
            stream = sys.stderr

Safe navigation `if` block: /usr/lib/python3.4/unittest/runner.py:165
            if startTestRun is not None:
                startTestRun()

Safe navigation `if` block: /usr/lib/python3.4/unittest/runner.py:171
                if stopTestRun is not None:
                    stopTestRun()

None-coalescing `if` block: /usr/lib/python3.4/functools.py:323
        if result is None:
            # If the underlying descriptor didn't do anything, treat this
            # like an instance method
            result = self._make_unbound_method().__get__(obj, cls)

None-coalescing `if` block: /usr/lib/python3.4/site.py:311
    if prefixes is None:
        prefixes = PREFIXES

None-coalescing `if` block: /usr/lib/python3.4/site.py:570
    if ENABLE_USER_SITE is None:
        ENABLE_USER_SITE = check_enableusersite()

None-coalescing `if` block: /usr/lib/python3.4/turtle.py:913
        if outline is None:
            outline = fill

None-coalescing `if` block: /usr/lib/python3.4/turtle.py:1972
        if extent is None:
            extent = self._fullcircle

None-coalescing `if` block: /usr/lib/python3.4/turtle.py:2815
        if outline is None:
            outline = self._outlinewidth

None-coalescing `if` block: /usr/lib/python3.4/turtle.py:3724
        if startx is None:
            startx = (sw - width) / 2

None-coalescing `if` block: /usr/lib/python3.4/turtle.py:3728
        if starty is None:
            starty = (sh - height) / 2

None-coalescing `if` block: /usr/lib/python3.4/socketserver.py:282
        if timeout is None:
            timeout = self.timeout

Safe navigation `and`: /usr/lib/python3.4/fileinput.py:100
    if _state and _state._file:

None-coalescing `if` block: /usr/lib/python3.4/shutil.py:725
    if extra_args is None:
        extra_args = []

None-coalescing `if` block: /usr/lib/python3.4/shutil.py:766
    if base_dir is None:
        base_dir = os.curdir

None-coalescing `if` block: /usr/lib/python3.4/shutil.py:841
    if extra_args is None:
        extra_args = []

None-coalescing `if` block: /usr/lib/python3.4/shutil.py:938
    if extract_dir is None:
        extract_dir = os.getcwd()

None-coalescing `if` block: /usr/lib/python3.4/shutil.py:1093
    if path is None:
        path = os.environ.get("PATH", os.defpath)

Safe navigation `if` block: /usr/lib/python3.4/shutil.py:298
    if ignore is not None:
        ignored_names = ignore(src, names)
    else:
        ignored_names = set()

Safe navigation `if` block: /usr/lib/python3.4/shutil.py:610
    if logger is not None:
        logger.info('Creating tar archive')

None-coalescing `if` block: /usr/lib/python3.4/types.py:65
    if kwds is None:
        kwds = {}

Safe navigation `if` block: /usr/lib/python3.4/types.py:50
    if exec_body is not None:
        exec_body(ns)

None-coalescing `if` block: /usr/lib/python3.4/idlelib/FormatParagraph.py:47
        if limit is None:
            # The default length limit is that defined by pep8
            limit = idleConf.GetOption(

None-coalescing `if` block: /usr/lib/python3.4/idlelib/StackViewer.py:29
        if tb is None:
            tb = sys.last_traceback

[Possible] None-coalescing `or`: /usr/lib/python3.4/idlelib/ReplaceDialog.py:36
        first = first or text.index("insert")

None-coalescing `if` block: /usr/lib/python3.4/idlelib/macosxSupport.py:155
        if end is None:
            end = -1

[Possible] None-coalescing `or`: /usr/lib/python3.4/idlelib/HyperParser.py:53
            parser.set_lo(bod or 0)

None-coalescing `if` block: /usr/lib/python3.4/idlelib/EditorWindow.py:470
        if end is None:
            end = -1

None-coalescing `if` block: /usr/lib/python3.4/idlelib/EditorWindow.py:1103
        if keydefs is None:
            keydefs = self.Bindings.default_keydefs

None-coalescing `if` block: /usr/lib/python3.4/idlelib/EditorWindow.py:1116
        if menudefs is None:
            menudefs = self.Bindings.menudefs

None-coalescing `if` block: /usr/lib/python3.4/idlelib/EditorWindow.py:1118
        if keydefs is None:
            keydefs = self.Bindings.default_keydefs

[Possible] None-coalescing `or`: /usr/lib/python3.4/idlelib/EditorWindow.py:1358
                y.set_lo(bod or 0)

None-coalescing `if` block: /usr/lib/python3.4/idlelib/run.py:34
    if file is None:
        file = sys.stderr

[Possible] None-coalescing `or`: /usr/lib/python3.4/idlelib/configDialog.py:39
        self.title(title or 'IDLE Preferences')

[Possible] None-coalescing `or`: /usr/lib/python3.4/idlelib/configDialog.py:1256
        self.wm_title(title or 'IDLE Extensions Configuration')

None-coalescing `if` block: /usr/lib/python3.4/idlelib/rpc.py:73
        if handlerclass is None:
            handlerclass = RPCHandler

None-coalescing `if` block: /usr/lib/python3.4/idlelib/rpc.py:134
        if objtable is None:
            objtable = objecttable

Safe navigation `if` block: /usr/lib/python3.4/idlelib/rpc.py:143
        if sock is not None:
            sock.close()

None-coalescing `if` block: /usr/lib/python3.4/idlelib/MultiStatusBar.py:6
        if master is None:
            master = Tk()

None-coalescing `if` block: /usr/lib/python3.4/idlelib/PyShell.py:56
    if line is None:
        line = linecache.getline(filename, lineno)

None-coalescing `if` block: /usr/lib/python3.4/idlelib/PyShell.py:72
    if file is None:
        file = warning_stream

None-coalescing `if` block: /usr/lib/python3.4/idlelib/PyShell.py:1362
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/idlelib/PyShell.py:1385
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/idlelib/Debugger.py:55
        if idb is None:
            idb = Idb(self)

[Possible] None-coalescing `or`: /usr/lib/python3.4/idlelib/TreeWidget.py:82
        ext = ext or ".gif"

None-coalescing `if` block: /usr/lib/python3.4/cmd.py:87
        if stdin is not None:
            self.stdin = stdin
        else:
            self.stdin = sys.stdin

None-coalescing `if` block: /usr/lib/python3.4/cmd.py:91
        if stdout is not None:
            self.stdout = stdout
        else:
            self.stdout = sys.stdout

Safe navigation `if` block: /usr/lib/python3.4/_threading_local.py:185
            if local is not None:
                dct = local.dicts.pop(idt)

None-coalescing `if` block: /usr/lib/python3.4/pkgutil.py:298
        if fullname is None:
            fullname = self.fullname

Safe navigation ternary: /usr/lib/python3.4/pkgutil.py:492
    return spec.loader if spec is not None else None

None-coalescing `if` block: /usr/lib/python3.4/crypt.py:28
    if method is None:
        method = methods[0]

[Possible] None-coalescing `or`: /usr/lib/python3.4/getopt.py:165
    opts.append(('--' + opt, optarg or ''))

Safe navigation `and`: /usr/lib/python3.4/getopt.py:88
    while args and args[0].startswith('-') and args[0] != '-':

None-coalescing `if` block: /usr/lib/python3.4/mailbox.py:820
        if from_line is None:
            from_line = b'From MAILER-DAEMON ' + time.asctime(time.gmtime()).encode()

None-coalescing `if` block: /usr/lib/python3.4/mailbox.py:1919
        if pos is None:
            self._pos = f.tell()
        else:
            self._pos = pos

None-coalescing `if` block: /usr/lib/python3.4/mailbox.py:1975
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/binhex.py:151
            if finfo is None:
                finfo = FInfo()

None-coalescing `if` block: /usr/lib/python3.4/pickle.py:373
        if protocol is None:
            protocol = DEFAULT_PROTOCOL

None-coalescing `if` block: /usr/lib/python3.4/pickle.py:904
        if name is None:
            name = obj.__name__

Safe navigation `if` block: /usr/lib/python3.4/pickle.py:484
        if reduce is not None:
            rv = reduce(obj)
        else:
            # Check for a class with a custom metaclass; treat as regular class
            try:

None-coalescing `if` block: /usr/lib/python3.4/sysconfig.py:169
    if vars is None:
        vars = {}

None-coalescing `if` block: /usr/lib/python3.4/sysconfig.py:229
    if vars is None:
        vars = {}

None-coalescing `if` block: /usr/lib/python3.4/sysconfig.py:438
    if vars is None:
        vars = {}

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:543
    if ctx is None: ctx = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:823
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1098
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1120
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1162
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1272
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1326
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1427
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1470
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1500
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1577
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:1972
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2315
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2510
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2539
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2541
        if rounding is None:
            rounding = context.rounding

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2694
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2696
        if rounding is None:
            rounding = context.rounding

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2706
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2708
        if rounding is None:
            rounding = context.rounding

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2725
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2830
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:2872
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3045
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3145
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3165
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3201
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3281
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3342
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3388
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3405
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3412
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3429
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3448
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3478
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3506
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3529
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3561
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3625
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3644
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3677
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3702
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3769
        if context is None:
            context = getcontext()

None-coalescing `if` block: /usr/lib/python3.4/decimal.py:3911
        if _ignored_flags is None:
            self._ignored_flags = []
        else:
            self._ignored_flags = _ignored_flags

[Possible] None-coalescing `or`: /usr/lib/python3.4/decimal.py:613
                    self._int = str(int(diag or '0')).lstrip('0')

[Possible] None-coalescing `or`: /usr/lib/python3.4/decimal.py:688
                    self._int = ''.join(map(str, digits or [0]))

[Possible] None-coalescing `or`: /usr/lib/python3.4/decimal.py:6199
    format_dict['fill'] = fill or ' '

[Possible] None-coalescing `or`: /usr/lib/python3.4/decimal.py:6203
    format_dict['align'] = align or '>'

None-coalescing ternary: /usr/lib/python3.4/decimal.py:3904
        self.prec = prec if prec is not None else dc.prec

None-coalescing ternary: /usr/lib/python3.4/decimal.py:3905
        self.rounding = rounding if rounding is not None else dc.rounding

None-coalescing ternary: /usr/lib/python3.4/decimal.py:3906
        self.Emin = Emin if Emin is not None else dc.Emin

None-coalescing ternary: /usr/lib/python3.4/decimal.py:3907
        self.Emax = Emax if Emax is not None else dc.Emax

None-coalescing ternary: /usr/lib/python3.4/decimal.py:3908
        self.capitals = capitals if capitals is not None else dc.capitals

None-coalescing ternary: /usr/lib/python3.4/decimal.py:3909
        self.clamp = clamp if clamp is not None else dc.clamp

Safe navigation `if` block: /usr/lib/python3.4/decimal.py:791
        if other is None:
            other_is_nan = False
        else:
            other_is_nan = other._isnan()

None-coalescing `if` block: /usr/lib/python3.4/inspect.py:594
    if _filename is None:
        _filename = getsourcefile(object) or getfile(object)

Safe navigation `if` block: /usr/lib/python3.4/inspect.py:2436
            if kwdefaults is not None:
                default = kwdefaults.get(name, _empty)

None-coalescing `if` block: /usr/lib/python3.4/filecmp.py:123
        if hide is None:
            self.hide = [os.curdir, os.pardir] # Names never to be shown
        else:
            self.hide = hide

None-coalescing `if` block: /usr/lib/python3.4/filecmp.py:127
        if ignore is None:
            self.ignore = DEFAULT_IGNORES
        else:
            self.ignore = ignore

None-coalescing `if` block: /usr/lib/python3.4/py_compile.py:157
    if args is None:
        args = sys.argv[1:]

None-coalescing `if` block: /usr/lib/python3.4/formatter.py:42
        if writer is None:
            writer = NullWriter()

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:776
        if year is None:
            year = self._year

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:778
        if month is None:
            month = self._month

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:780
        if day is None:
            day = self._day

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1238
        if hour is None:
            hour = self.hour

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1240
        if minute is None:
            minute = self.minute

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1242
        if second is None:
            second = self.second

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1244
        if microsecond is None:
            microsecond = self.microsecond

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1419
        if dst is None:
            dst = -1

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1463
        if year is None:
            year = self.year

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1465
        if month is None:
            month = self.month

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1467
        if day is None:
            day = self.day

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1469
        if hour is None:
            hour = self.hour

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1471
        if minute is None:
            minute = self.minute

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1473
        if second is None:
            second = self.second

None-coalescing `if` block: /usr/lib/python3.4/datetime.py:1475
        if microsecond is None:
            microsecond = self.microsecond

Safe navigation `if` block: /usr/lib/python3.4/datetime.py:1367
        if tz is not None:
            result = tz.fromutc(result)

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:496
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:566
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:732
        if pos is None:
            pos = self.tell()

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:847
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:908
        if pos is None:
            pos = self._pos

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1138
            if pos is None:
                pos = self.raw.tell()

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1207
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1282
        if pos is None:
            pos = self.tell()

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1288
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1524
        if errors is None:
            errors = "strict"

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1853
        if pos is None:
            pos = self.tell()

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1938
        if size is None:
            size = -1

None-coalescing `if` block: /usr/lib/python3.4/_pyio.py:1973
        if size is None:
            size = -1

None-coalescing ternary: /usr/lib/python3.4/_pyio.py:396
                                       if msg is None else msg)

None-coalescing ternary: /usr/lib/python3.4/_pyio.py:410
                                       if msg is None else msg)

None-coalescing ternary: /usr/lib/python3.4/_pyio.py:424
                                       if msg is None else msg)

None-coalescing ternary: /usr/lib/python3.4/_pyio.py:439
                             if msg is None else msg)

None-coalescing `if` block: /usr/lib/python3.4/traceback.py:27
    if file is None:
        file = sys.stderr

None-coalescing `if` block: /usr/lib/python3.4/traceback.py:54
    if limit is None:
        limit = getattr(sys, 'tracebacklimit', None)

None-coalescing `if` block: /usr/lib/python3.4/traceback.py:121
    if seen is None:
        seen = set()

None-coalescing `if` block: /usr/lib/python3.4/traceback.py:167
    if file is None:
        file = sys.stderr

None-coalescing `if` block: /usr/lib/python3.4/traceback.py:275
    if f is None:
        f = sys._getframe().f_back.f_back

None-coalescing `if` block: /usr/lib/python3.4/uuid.py:585
    if node is None:
        node = getnode()

None-coalescing `if` block: /usr/lib/python3.4/calendar.py:468
        if encoding is None:
            encoding = sys.getdefaultencoding()

None-coalescing `if` block: /usr/lib/python3.4/calendar.py:510
        if locale is None:
            locale = _locale.getdefaultlocale()

None-coalescing `if` block: /usr/lib/python3.4/calendar.py:540
        if locale is None:
            locale = _locale.getdefaultlocale()

None-coalescing `if` block: /usr/lib/python3.4/importlib/_bootstrap.py:535
        if name is None:
            name = self.name

None-coalescing `if` block: /usr/lib/python3.4/importlib/_bootstrap.py:611
    if name is not None:
        exc_details['name'] = name
    else:
        # To prevent having to make all messages have a conditional name.
        name = '<bytecode>'

None-coalescing `if` block: /usr/lib/python3.4/importlib/_bootstrap.py:1114
        if module is None:
            # This must be done before open() is ever called as the 'io'
            # module implicitly imports 'locale' and would otherwise
            # trigger an infinite loop.
            module = _new_module(spec.name)

None-coalescing `if` block: /usr/lib/python3.4/importlib/_bootstrap.py:1938
        if path is None:
            path = sys.path

[Possible] None-coalescing `or`: /usr/lib/python3.4/importlib/_bootstrap.py:1988
        self.path = path or '.'

[Possible] None-coalescing `or`: /usr/lib/python3.4/importlib/_bootstrap.py:2065
            contents = _os.listdir(path or _os.getcwd())

None-coalescing ternary: /usr/lib/python3.4/importlib/_bootstrap.py:450
    debug = not sys.flags.optimize if debug_override is None else debug_override

None-coalescing ternary: /usr/lib/python3.4/importlib/_bootstrap.py:2336
        globals_ = globals if globals is not None else {}

Safe navigation ternary: /usr/lib/python3.4/importlib/_bootstrap.py:1285
        return spec.loader if spec is not None else None

Safe navigation ternary: /usr/lib/python3.4/importlib/abc.py:60
        return found.loader if found is not None else None

None-coalescing `if` block: /usr/lib/python3.4/distutils/fancy_getopt.py:221
        if args is None:
            args = sys.argv[1:]

None-coalescing `if` block: /usr/lib/python3.4/distutils/fancy_getopt.py:361
        if file is None:
            file = sys.stdout

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:313
        if outdir is None:
            outdir = self.output_dir

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:318
        if macros is None:
            macros = self.macros

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:325
        if incdirs is None:
            incdirs = self.include_dirs

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:333
        if extra is None:
            extra = []

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:372
        if output_dir is None:
            output_dir = self.output_dir

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:377
        if macros is None:
            macros = self.macros

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:384
        if include_dirs is None:
            include_dirs = self.include_dirs

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:420
        if output_dir is None:
            output_dir = self.output_dir

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:434
        if libraries is None:
            libraries = self.libraries

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:442
        if library_dirs is None:
            library_dirs = self.library_dirs

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:450
        if runtime_library_dirs is None:
            runtime_library_dirs = self.runtime_library_dirs

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:770
        if includes is None:
            includes = []

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:772
        if include_dirs is None:
            include_dirs = []

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:774
        if libraries is None:
            libraries = []

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:776
        if library_dirs is None:
            library_dirs = []

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:847
        if output_dir is None:
            output_dir = ''

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:946
    if osname is None:
        osname = os.name

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:948
    if platform is None:
        platform = sys.platform

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:1000
    if plat is None:
        plat = os.name

None-coalescing `if` block: /usr/lib/python3.4/distutils/ccompiler.py:1004
        if compiler is None:
            compiler = get_default_compiler(plat)

None-coalescing `if` block: /usr/lib/python3.4/distutils/versionpredicate.py:155
    if _provision_rx is None:
        _provision_rx = re.compile(

None-coalescing `if` block: /usr/lib/python3.4/distutils/archive_util.py:220
    if base_dir is None:
        base_dir = os.curdir

None-coalescing `if` block: /usr/lib/python3.4/distutils/msvc9compiler.py:341
        if plat_name is None:
            plat_name = get_platform()

None-coalescing `if` block: /usr/lib/python3.4/distutils/msvc9compiler.py:430
        if output_dir is None: output_dir = ''

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/msvc9compiler.py:465
        compile_opts = extra_preargs or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/msvc9compiler.py:610
            for sym in (export_symbols or []):

None-coalescing `if` block: /usr/lib/python3.4/distutils/cygwinccompiler.py:254
        if output_dir is None:
            output_dir = ''

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/cygwinccompiler.py:180
        extra_preargs = copy.copy(extra_preargs or [])

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/cygwinccompiler.py:181
        libraries = copy.copy(libraries or [])

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/cygwinccompiler.py:182
        objects = copy.copy(objects or [])

None-coalescing `if` block: /usr/lib/python3.4/distutils/util.py:367
    if direct is None:
        direct = (__debug__ and optimize == 0)

None-coalescing `if` block: /usr/lib/python3.4/distutils/util.py:498
    if fixer_names is None:
        fixer_names = get_fixers_from_package('lib2to3.fixes')

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/util.py:456
                if force or newer(file, cfile):

None-coalescing `if` block: /usr/lib/python3.4/distutils/msvccompiler.py:315
        if output_dir is None: output_dir = ''

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/msvccompiler.py:350
        compile_opts = extra_preargs or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/msvccompiler.py:495
            for sym in (export_symbols or []):

None-coalescing `if` block: /usr/lib/python3.4/distutils/dist.py:296
        if commands is None:             # dump all command option dicts
            commands = sorted(self.command_options.keys())

None-coalescing `if` block: /usr/lib/python3.4/distutils/dist.py:384
        if filenames is None:
            filenames = self.find_config_files()

None-coalescing `if` block: /usr/lib/python3.4/distutils/dist.py:871
        if option_dict is None:
            option_dict = self.get_option_dict(command_name)

None-coalescing `if` block: /usr/lib/python3.4/distutils/command/bdist_rpm.py:356
                if source_rpm is None:
                    source_rpm = l[0]

None-coalescing `if` block: /usr/lib/python3.4/distutils/bcppcompiler.py:338
        if output_dir is None: output_dir = ''

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/bcppcompiler.py:88
        compile_opts = extra_preargs or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/bcppcompiler.py:226
                for sym in (export_symbols or []):

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:112
        self.include_dirs = include_dirs or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:113
        self.define_macros = define_macros or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:114
        self.undef_macros = undef_macros or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:115
        self.library_dirs = library_dirs or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:116
        self.libraries = libraries or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:117
        self.runtime_library_dirs = runtime_library_dirs or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:118
        self.extra_objects = extra_objects or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:119
        self.extra_compile_args = extra_compile_args or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:120
        self.extra_link_args = extra_link_args or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:121
        self.export_symbols = export_symbols or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:122
        self.swig_opts = swig_opts or []

[Possible] None-coalescing `or`: /usr/lib/python3.4/distutils/extension.py:123
        self.depends = depends or []

None-coalescing `if` block: /usr/lib/python3.4/distutils/text_file.py:128
        if line is None:
            line = self.current_line

None-coalescing `if` block: /usr/lib/python3.4/distutils/cmd.py:153
        if header is None:
            header = "command options for '%s':" % self.get_command_name()

None-coalescing `if` block: /usr/lib/python3.4/distutils/cmd.py:384
        if skip_msg is None:
            skip_msg = "skipping %s (inputs unchanged)" % outfile

None-coalescing `if` block: /usr/lib/python3.4/distutils/cmd.py:394
        if exec_msg is None:
            exec_msg = "generating %s from %s" % (outfile, ', '.join(infiles))

None-coalescing `if` block: /usr/lib/python3.4/distutils/sysconfig.py:97
    if prefix is None:
        prefix = plat_specific and BASE_EXEC_PREFIX or BASE_PREFIX

None-coalescing `if` block: /usr/lib/python3.4/distutils/sysconfig.py:292
    if g is None:
        g = {}

None-coalescing `if` block: /usr/lib/python3.4/distutils/sysconfig.py:330
    if g is None:
        g = {}

None-coalescing `if` block: /usr/lib/python3.4/distutils/spawn.py:178
    if path is None:
        path = os.environ['PATH']

None-coalescing `if` block: /usr/lib/python3.4/shlex.py:256
        if infile is None:
            infile = self.infile

None-coalescing `if` block: /usr/lib/python3.4/shlex.py:258
        if lineno is None:
            lineno = self.lineno

[Possible] None-coalescing `or`: /usr/lib/python3.4/csv.py:200
        dialect.quotechar = quotechar or '"'

[Possible] None-coalescing `or`: /usr/lib/python3.4/lib2to3/refactor.py:191
        self.explicit = explicit or []

None-coalescing `if` block: /usr/lib/python3.4/lib2to3/pgen2/driver.py:33
        if logger is None:
            logger = logging.getLogger()

None-coalescing `if` block: /usr/lib/python3.4/lib2to3/pgen2/driver.py:112
    if logger is None:
        logger = logging.getLogger()

None-coalescing `if` block: /usr/lib/python3.4/lib2to3/pgen2/pgen.py:165
            if startsymbol is None:
                startsymbol = name

Safe navigation `if` block: /usr/lib/python3.4/lib2to3/pgen2/pgen.py:22
        if close_stream is not None:
            close_stream()

None-coalescing `if` block: /usr/lib/python3.4/lib2to3/pgen2/parse.py:102
        if start is None:
            start = self.grammar.start

None-coalescing `if` block: /usr/lib/python3.4/lib2to3/fixes/fix_tuple_params.py:158
    if d is None:
        d = {}

None-coalescing `if` block: /usr/lib/python3.4/ipaddress.py:1718
        if ip_int is None:
            ip_int = int(self._ip)

None-coalescing `if` block: /usr/lib/python3.4/bisect.py:14
    if hi is None:
        hi = len(a)

None-coalescing `if` block: /usr/lib/python3.4/bisect.py:37
    if hi is None:
        hi = len(a)

None-coalescing `if` block: /usr/lib/python3.4/bisect.py:58
    if hi is None:
        hi = len(a)

None-coalescing `if` block: /usr/lib/python3.4/bisect.py:80
    if hi is None:
        hi = len(a)

Total None-coalescing `if` blocks: 426
Total [possible] None-coalescing `or`: 119
Total None-coalescing ternaries: 21
Total Safe navigation `and`: 9
Total Safe navigation `if` blocks: 55
Total Safe navigation ternaries: 7