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[3.15] gh-153528: Document mode="func_type" in compile() (GH-153561) #160479

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JelleZijlstra merged 1 commit into from
Oct 24, 2026
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[3.15] gh-153528: Document mode="func_type" in compile() (GH-153561) #160479

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7 changes: 7 additions & 0 deletions Doc/builtins/functions.rst
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Expand Up @@ -314,6 +314,10 @@ are always available. They are listed here in alphabetical order.
consists of a single expression, or ``'single'`` if it consists of a single
interactive statement (in the latter case, expression statements that
evaluate to something other than ``None`` will be printed).
It can also be ``'func_type'`` if *source* consists of a
function type signature, for example ``(int) -> str``; see
:func:`ast.parse` for more information. This mode requires passing
:data:`ast.PyCF_ONLY_AST` in *flags*.

The optional arguments *flags* and *dont_inherit* control which
:ref:`compiler options <ast-compiler-flags>` should be activated
Expand Down Expand Up @@ -387,6 +391,9 @@ are always available. They are listed here in alphabetical order.
``ast.PyCF_ALLOW_TOP_LEVEL_AWAIT`` can now be passed in flags to enable
support for top-level ``await``, ``async for``, and ``async with``.

.. versionchanged:: 3.8
Added support for ``mode='func_type'``.

.. versionchanged:: 3.12
:exc:`SyntaxError` is raised instead of :exc:`ValueError` when null bytes
are encountered in *source*.
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