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pathlib.PurePath() ⚬｜Documentation｜1st｜20260122195929-00-⌔

pathlib — Object-oriented filesystem paths — Python 3.14.2 documentation#pathlib.PurePath

class pathlib.PurePath(﹡pathsegments)

A generic class that represents the system’s path flavour (instantiating it creates either a PurePosixPath or a PureWindowsPath):

>>> PurePath('setup.py')      # Running on a Unix machine
PurePosixPath('setup.py')

Each element of pathsegments can be either a string representing a path segment, or an object implementing the os.PathLike interface where the __fspath__() method returns a string, such as another path object:

>>> PurePath('foo', 'some/path', 'bar')
PurePosixPath('foo/some/path/bar')
>>> PurePath(Path('foo'), Path('bar'))
PurePosixPath('foo/bar')

When pathsegments is empty, the current directory is assumed:

>>> PurePath()
PurePosixPath('.')

If a segment is an absolute path, all previous segments are ignored (like os.path.join()):

>>> PurePath('/etc', '/usr', 'lib64')
PurePosixPath('/usr/lib64')
>>> PureWindowsPath('c:/Windows', 'd:bar')
PureWindowsPath('d:bar')

On Windows, the drive is not reset when a rooted relative path segment (e.g., r'\foo') is encountered:

>>> PureWindowsPath('c:/Windows', '/Program Files')
PureWindowsPath('c:/Program Files')

Spurious slashes and single dots are collapsed, but double dots ('..') and leading double slashes ('//') are not, since this would change the meaning of a path for various reasons (e.g. symbolic links, UNC paths):

>>> PurePath('foo//bar')
PurePosixPath('foo/bar')
>>> PurePath('//foo/bar')
PurePosixPath('//foo/bar')
>>> PurePath('foo/./bar')
PurePosixPath('foo/bar')
>>> PurePath('foo/../bar')
PurePosixPath('foo/../bar')

(a naïve approach would make PurePosixPath('foo/../bar') equivalent to PurePosixPath('bar'), which is wrong if foo is a symbolic link to another directory)

Pure path objects implement the os.PathLike interface, allowing them to be used anywhere the interface is accepted.

Changed in version 3.6: Added support for the os.PathLike interface.

Printed 2026-06-28.

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