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"func_annotations" -> " __annotations__" (#628)

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jseakle 2018-05-16 12:16:39 -04:00 committed by Brett Cannon
parent 18fda30932
commit 0c7cde8a13
1 changed files with 5 additions and 5 deletions
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10
pep-3107.txt
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@ -151,7 +151,7 @@ parentheses around the parameter list. However it was decided
[#lambda]_ not to make this change because: [#lambda]_ not to make this change because:
1. It would be an incompatible change. 1. It would be an incompatible change.
2. Lambda's are neutered anyway. 2. Lambdas are neutered anyway.
3. The lambda can always be changed to a function. 3. The lambda can always be changed to a function.
@ -159,11 +159,11 @@ Accessing Function Annotations
============================== ==============================
Once compiled, a function's annotations are available via the Once compiled, a function's annotations are available via the
function's ``func_annotations`` attribute. This attribute is function's ``__annotations__`` attribute. This attribute is
a mutable dictionary, mapping parameter names to an object a mutable dictionary, mapping parameter names to an object
representing the evaluated annotation expression representing the evaluated annotation expression
There is a special key in the ``func_annotations`` mapping, There is a special key in the ``__annotations__`` mapping,
``"return"``. This key is present only if an annotation was supplied ``"return"``. This key is present only if an annotation was supplied
for the function's return value. for the function's return value.
@ -172,7 +172,7 @@ For example, the following annotation::
def foo(a: 'x', b: 5 + 6, c: list) -> max(2, 9): def foo(a: 'x', b: 5 + 6, c: list) -> max(2, 9):
... ...
would result in a ``func_annotation`` mapping of :: would result in an ``__annotations__`` mapping of ::
{'a': 'x', {'a': 'x',
'b': 11, 'b': 11,
@ -183,7 +183,7 @@ The ``return`` key was chosen because it cannot conflict with the name
of a parameter; any attempt to use ``return`` as a parameter name of a parameter; any attempt to use ``return`` as a parameter name
would result in a ``SyntaxError``. would result in a ``SyntaxError``.
``func_annotations`` is an empty, mutable dictionary if there are no ``__annotations__`` is an empty, mutable dictionary if there are no
annotations on the function or if the functions was created from annotations on the function or if the functions was created from
a ``lambda`` expression. a ``lambda`` expression.