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Diffstat (limited to 'Doc/library/pathlib.rst')
| -rw-r--r-- | Doc/library/pathlib.rst | 37 |
1 files changed, 25 insertions, 12 deletions
diff --git a/Doc/library/pathlib.rst b/Doc/library/pathlib.rst index 7b90a1f3f9..34ab3b8edf 100644 --- a/Doc/library/pathlib.rst +++ b/Doc/library/pathlib.rst @@ -35,12 +35,6 @@ Pure paths are useful in some special cases; for example: accessing the OS. In this case, instantiating one of the pure classes may be useful since those simply don't have any OS-accessing operations. -.. note:: - This module has been included in the standard library on a - :term:`provisional basis <provisional package>`. Backwards incompatible - changes (up to and including removal of the package) may occur if deemed - necessary by the core developers. - .. seealso:: :pep:`428`: The pathlib module -- object-oriented filesystem paths. @@ -111,7 +105,8 @@ we also call *flavours*: PurePosixPath('setup.py') Each element of *pathsegments* can be either a string representing a - path segment, or another path object:: + path segment, an object implementing the :class:`os.PathLike` interface + which returns a string, or another path object:: >>> PurePath('foo', 'some/path', 'bar') PurePosixPath('foo/some/path/bar') @@ -152,6 +147,12 @@ we also call *flavours*: to ``PurePosixPath('bar')``, which is wrong if ``foo`` is a symbolic link to another directory) + Pure path objects implement the :class:`os.PathLike` interface, allowing them + to be used anywhere the interface is accepted. + + .. versionchanged:: 3.6 + Added support for the :class:`os.PathLike` interface. + .. class:: PurePosixPath(*pathsegments) A subclass of :class:`PurePath`, this path flavour represents non-Windows @@ -199,7 +200,7 @@ Paths of a different flavour compare unequal and cannot be ordered:: >>> PureWindowsPath('foo') < PurePosixPath('foo') Traceback (most recent call last): File "<stdin>", line 1, in <module> - TypeError: unorderable types: PureWindowsPath() < PurePosixPath() + TypeError: '<' not supported between instances of 'PureWindowsPath' and 'PurePosixPath' Operators @@ -216,6 +217,14 @@ The slash operator helps create child paths, similarly to :func:`os.path.join`:: >>> '/usr' / q PurePosixPath('/usr/bin') +A path object can be used anywhere an object implementing :class:`os.PathLike` +is accepted:: + + >>> import os + >>> p = PurePath('/etc') + >>> os.fspath(p) + '/etc' + The string representation of a path is the raw filesystem path itself (in native form, e.g. with backslashes under Windows), which you can pass to any function taking a file path as a string:: @@ -910,7 +919,7 @@ call fails (for example because the path doesn't exist): to an existing file or directory, it will be unconditionally replaced. -.. method:: Path.resolve() +.. method:: Path.resolve(strict=False) Make the path absolute, resolving any symlinks. A new path object is returned:: @@ -927,10 +936,14 @@ call fails (for example because the path doesn't exist): >>> p.resolve() PosixPath('/home/antoine/pathlib/setup.py') - If the path doesn't exist, :exc:`FileNotFoundError` is raised. If an - infinite loop is encountered along the resolution path, - :exc:`RuntimeError` is raised. + If the path doesn't exist and *strict* is ``True``, :exc:`FileNotFoundError` + is raised. If *strict* is ``False``, the path is resolved as far as possible + and any remainder is appended without checking whether it exists. If an + infinite loop is encountered along the resolution path, :exc:`RuntimeError` + is raised. + .. versionadded:: 3.6 + The *strict* argument. .. method:: Path.rglob(pattern) |