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Issue #27186: Update os.fspath()/PyOS_FSPath() to check the return

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type of __fspath__().

As part of this change, also make sure that the pure Python
implementation of os.fspath() is tested.
This commit is contained in:
Brett Cannon 2016-06-24 12:03:43 -07:00
parent 19b2a53a82
commit c78ca1e044
7 changed files with 101 additions and 71 deletions
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14
Doc/library/os.rst
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@ -179,7 +179,8 @@ process and user.
.. versionadded:: 3.2
.. versionchanged:: 3.6
Support added to accept objects implementing :class:`os.PathLike`.
Support added to accept objects implementing the :class:`os.PathLike`
interface.
.. function:: fsdecode(filename)
@ -192,17 +193,18 @@ process and user.
.. versionadded:: 3.2
.. versionchanged:: 3.6
Support added to accept objects implementing :class:`os.PathLike`.
Support added to accept objects implementing the :class:`os.PathLike`
interface.
.. function:: fspath(path)
Return the file system representation of the path.
If :class:`str` or :class:`bytes` is passed in, it is returned unchanged;
otherwise, the result of calling ``type(path).__fspath__`` is returned
(which is represented by :class:`os.PathLike`). All other types raise a
:exc:`TypeError`.
If :class:`str` or :class:`bytes` is passed in, it is returned unchanged.
Otherwise :meth:`~os.PathLike.__fspath__` is called and its value is
returned as long as it is a :class:`str` or :class:`bytes` object.
In all other cases, :exc:`TypeError` is raised.
.. versionadded:: 3.6