Fix alerts from LGTM about python files (#8383)

distribution/bin/check-licenses.py

@@ -16,7 +16,6 @@
 # limitations under the License.
 
 import yaml
-import json
 import os
 import sys
 from html.parser import HTMLParser

distribution/bin/find-missing-backports.py

@@ -20,7 +20,6 @@ import re
 import requests
 import subprocess
 import sys
-import time
 
 
 def extract_pr_title_from_commit_message(commit_msg):
@@ -48,7 +47,7 @@ def extract_pr_title(pr_json):
 def find_missing_backports(pr_jsons, release_pr_subjects):
     for pr in pr_jsons:
         if pr['milestone'] is not None:
-            if pr['milestone']['number'] is milestone_number:
+            if pr['milestone']['number'] == milestone_number:
                 for pr_title_candidate in extract_pr_title(pr):
                     if pr_title_candidate in release_pr_subjects:
                         return
@@ -65,8 +64,7 @@ def find_next_url(links):
             else:
                 url_holder = match_result.group(0)
                 return url_holder[1:-1]
-    else:
-        return None
+    return None
 
 
 if len(sys.argv) != 5:

distribution/bin/generate-license-dependency-reports.py

@@ -18,11 +18,8 @@
 import os
 import shutil
 import subprocess
-import sys
 import argparse
 import concurrent.futures
-import time
-import threading
 
 
 def generate_report(module_path, report_orig_path, report_out_path):
@@ -48,7 +45,7 @@ def generate_report(module_path, report_orig_path, report_out_path):
 def generate_reports(druid_path, tmp_path, exclude_ext, num_threads):
     tmp_path = os.path.abspath(tmp_path)
     license_report_root = os.path.join(tmp_path, "license-reports")
-    license_core_path =  os.path.join(license_report_root, "core")
+    license_core_path = os.path.join(license_report_root, "core")
     license_ext_path = os.path.join(license_report_root, "ext")
     shutil.rmtree(license_report_root, ignore_errors=True)
     os.makedirs(license_core_path)

distribution/bin/jar-notice-lister.py

@@ -34,14 +34,14 @@ def main():
     tmp_lib_path = tmp_path + "/1-lib"
     os.mkdir(tmp_lib_path)
     command = "cp -r {}/* {}".format(lib_path, tmp_lib_path)
-    outstr = subprocess.check_output(command, shell=True).decode('UTF-8')
+    subprocess.check_output(command, shell=True).decode('UTF-8')
 
     # copy hadoop deps to the staging dir
     hdeps_path = druid_path + "/hadoop-dependencies"
     tmp_hdeps_path = tmp_path + "/2-hdeps"
     os.mkdir(tmp_hdeps_path)
     command = "cp -r {}/* {}".format(hdeps_path, tmp_hdeps_path)
-    outstr = subprocess.check_output(command, shell=True).decode('UTF-8')
+    subprocess.check_output(command, shell=True).decode('UTF-8')
 
 
     # copy all extension folders to the staging dir
@@ -49,7 +49,7 @@ def main():
     tmp_ext_path = tmp_path + "/3-ext"
     os.mkdir(tmp_ext_path)
     command = "cp -r {}/* {}".format(ext_path, tmp_ext_path)
-    outstr = subprocess.check_output(command, shell=True).decode('UTF-8')
+    subprocess.check_output(command, shell=True).decode('UTF-8')
 
 
     get_notices(tmp_path)