cpython@074d7c4 (original) (raw)

`@@ -144,7 +144,7 @@ the single expression that makes up the expression list.

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`.. index:: pair: empty; tuple

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`An empty pair of parentheses yields an empty tuple object. Since tuples are

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immutable, the rules for literals apply (i.e., two occurrences of the empty

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immutable, the same rules as for literals apply (i.e., two occurrences of the empty

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`tuple may or may not yield the same object).

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`.. index::

`` @@ -484,8 +484,8 @@ will raise :exc:AttributeError or :exc:TypeError, while

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`` When the underlying iterator is complete, the :attr:~StopIteration.value

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`` attribute of the raised :exc:StopIteration instance becomes the value of

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`the yield expression. It can be either set explicitly when raising

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`` -

:exc:StopIteration, or automatically when the sub-iterator is a generator

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(by returning a value from the sub-generator).

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:exc:StopIteration, or automatically when the subiterator is a generator

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(by returning a value from the subgenerator).

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` .. versionchanged:: 3.3

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``` Added yield from <expr> to delegate control flow to a subiterator.


`@@ -504,7 +504,7 @@ on the right hand side of an assignment statement.

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`` :pep:`380` - Syntax for Delegating to a Subgenerator

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``  The proposal to introduce the :token:`yield_from` syntax, making delegation

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to sub-generators easy.

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to subgenerators easy.

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`` :pep:`525` - Asynchronous Generators

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``  The proposal that expanded on :pep:`492` by adding generator capabilities to

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`@@ -613,7 +613,7 @@ Asynchronous generator functions

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`^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

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`The presence of a yield expression in a function or method defined using

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``

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:keyword:`async def` further defines the function as a

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:keyword:`async def` further defines the function as an

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`` :term:`asynchronous generator` function.

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`When an asynchronous generator function is called, it returns an

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`@@ -678,13 +678,13 @@ which are used to control the execution of a generator function.

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` Returns an awaitable which when run starts to execute the asynchronous

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` generator or resumes it at the last executed yield expression. When an

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asynchronous generator function is resumed with a :meth:`~agen.__anext__`

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asynchronous generator function is resumed with an :meth:`~agen.__anext__`

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``  method, the current yield expression always evaluates to :const:`None` in

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` the returned awaitable, which when run will continue to the next yield

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``  expression. The value of the :token:`expression_list` of the yield

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``  expression is the value of the :exc:`StopIteration` exception raised by

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` the completing coroutine. If the asynchronous generator exits without

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yielding another value, the awaitable instead raises an

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yielding another value, the awaitable instead raises a

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`` :exc:`StopAsyncIteration` exception, signalling that the asynchronous

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` iteration has completed.

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``

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` where the asynchronous generator was paused, and returns the next value

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` yielded by the generator function as the value of the raised

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`` :exc:`StopIteration` exception. If the asynchronous generator exits

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without yielding another value, an :exc:`StopAsyncIteration` exception is

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without yielding another value, a :exc:`StopAsyncIteration` exception is

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` raised by the awaitable.

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` If the generator function does not catch the passed-in exception, or

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` raises a different exception, then when the awaitable is run that exception

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`` @@ -1584,7 +1584,7 @@ if :keyword:`in` raised that exception).

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` pair: membership; test

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` object: sequence

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The operator :keyword:`not in` is defined to have the inverse true value of

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The operator :keyword:`not in` is defined to have the inverse truth value of

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`` :keyword:`in`.

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`.. index::

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`Identity comparisons

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`--------------------

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``

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The operators :keyword:`is` and :keyword:`is not` test for object identity: ``x

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is y`` is true if and only if *x* and *y* are the same object. Object identity

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The operators :keyword:`is` and :keyword:`is not` test for an object's identity: ``x

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is y`` is true if and only if *x* and *y* are the same object. An Object's identity

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``` is determined using the :meth:id function. x is not y yields the inverse

```

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`truth value. [#]_

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