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Diffstat (limited to 'Doc/reference/compound_stmts.rst')
| -rw-r--r-- | Doc/reference/compound_stmts.rst | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/Doc/reference/compound_stmts.rst b/Doc/reference/compound_stmts.rst index 158d6a8f16..62986cb151 100644 --- a/Doc/reference/compound_stmts.rst +++ b/Doc/reference/compound_stmts.rst @@ -610,13 +610,9 @@ following the parameter name. Any parameter may have an annotation, even those ``*identifier`` or ``**identifier``. Functions may have "return" annotation of the form "``-> expression``" after the parameter list. These annotations can be any valid Python expression. The presence of annotations does not change the -semantics of a function. The annotation values are available as values of -a dictionary keyed by the parameters' names in the :attr:`__annotations__` -attribute of the function object. If the ``annotations`` import from -:mod:`__future__` is used, annotations are preserved as strings at runtime which -enables postponed evaluation. Otherwise, they are evaluated when the function -definition is executed. In this case annotations may be evaluated in -a different order than they appear in the source code. +semantics of a function. The annotation values are available as string values +in a dictionary keyed by the parameters' names in the :attr:`__annotations__` +attribute of the function object. .. index:: pair: lambda; expression @@ -772,10 +768,8 @@ Coroutine function definition keyword: await Execution of Python coroutines can be suspended and resumed at many points -(see :term:`coroutine`). Inside the body of a coroutine function, ``await`` and -``async`` identifiers become reserved keywords; :keyword:`await` expressions, -:keyword:`async for` and :keyword:`async with` can only be used in -coroutine function bodies. +(see :term:`coroutine`). :keyword:`await` expressions, :keyword:`async for` and +:keyword:`async with` can only be used in the body of a coroutine function. Functions defined with ``async def`` syntax are always coroutine functions, even if they do not contain ``await`` or ``async`` keywords. @@ -789,6 +783,9 @@ An example of a coroutine function:: do_stuff() await some_coroutine() +.. versionchanged:: 3.7 + ``await`` and ``async`` are now keywords; previously they were only + treated as such inside the body of a coroutine function. .. index:: statement: async for .. _`async for`: |