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937 lines (807 loc) · 32.7 KB
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import io
import ntpath
import operator
import os
import posixpath
import sys
from glob import _StringGlobber
from itertools import chain
from _collections_abc import Sequence
try:
import pwd
except ImportError:
pwd = None
try:
import grp
except ImportError:
grp = None
from ._os import (UnsupportedOperation, copyfile, file_metadata_keys,
read_file_metadata, write_file_metadata)
from ._abc import PurePathBase, PathBase
__all__ = [
"PurePath", "PurePosixPath", "PureWindowsPath",
"Path", "PosixPath", "WindowsPath",
]
class _PathParents(Sequence):
"""This object provides sequence-like access to the logical ancestors
of a path. Don't try to construct it yourself."""
__slots__ = ('_path', '_drv', '_root', '_tail')
def __init__(self, path):
self._path = path
self._drv = path.drive
self._root = path.root
self._tail = path._tail
def __len__(self):
return len(self._tail)
def __getitem__(self, idx):
if isinstance(idx, slice):
return tuple(self[i] for i in range(*idx.indices(len(self))))
if idx >= len(self) or idx < -len(self):
raise IndexError(idx)
if idx < 0:
idx += len(self)
return self._path._from_parsed_parts(self._drv, self._root,
self._tail[:-idx - 1])
def __repr__(self):
return "<{}.parents>".format(type(self._path).__name__)
class PurePath(PurePathBase):
"""Base class for manipulating paths without I/O.
PurePath represents a filesystem path and offers operations which
don't imply any actual filesystem I/O. Depending on your system,
instantiating a PurePath will return either a PurePosixPath or a
PureWindowsPath object. You can also instantiate either of these classes
directly, regardless of your system.
"""
__slots__ = (
# The `_raw_paths` slot stores unnormalized string paths. This is set
# in the `__init__()` method.
'_raw_paths',
# The `_drv`, `_root` and `_tail_cached` slots store parsed and
# normalized parts of the path. They are set when any of the `drive`,
# `root` or `_tail` properties are accessed for the first time. The
# three-part division corresponds to the result of
# `os.path.splitroot()`, except that the tail is further split on path
# separators (i.e. it is a list of strings), and that the root and
# tail are normalized.
'_drv', '_root', '_tail_cached',
# The `_str` slot stores the string representation of the path,
# computed from the drive, root and tail when `__str__()` is called
# for the first time. It's used to implement `_str_normcase`
'_str',
# The `_str_normcase_cached` slot stores the string path with
# normalized case. It is set when the `_str_normcase` property is
# accessed for the first time. It's used to implement `__eq__()`
# `__hash__()`, and `_parts_normcase`
'_str_normcase_cached',
# The `_parts_normcase_cached` slot stores the case-normalized
# string path after splitting on path separators. It's set when the
# `_parts_normcase` property is accessed for the first time. It's used
# to implement comparison methods like `__lt__()`.
'_parts_normcase_cached',
# The `_hash` slot stores the hash of the case-normalized string
# path. It's set when `__hash__()` is called for the first time.
'_hash',
)
parser = os.path
_globber = _StringGlobber
def __new__(cls, *args, **kwargs):
"""Construct a PurePath from one or several strings and or existing
PurePath objects. The strings and path objects are combined so as
to yield a canonicalized path, which is incorporated into the
new PurePath object.
"""
if cls is PurePath:
cls = PureWindowsPath if os.name == 'nt' else PurePosixPath
return object.__new__(cls)
def __init__(self, *args):
paths = []
for arg in args:
if isinstance(arg, PurePath):
if arg.parser is ntpath and self.parser is posixpath:
# GH-103631: Convert separators for backwards compatibility.
paths.extend(path.replace('\\', '/') for path in arg._raw_paths)
else:
paths.extend(arg._raw_paths)
else:
try:
path = os.fspath(arg)
except TypeError:
path = arg
if not isinstance(path, str):
raise TypeError(
"argument should be a str or an os.PathLike "
"object where __fspath__ returns a str, "
f"not {type(path).__name__!r}")
paths.append(path)
# Avoid calling super().__init__, as an optimisation
self._raw_paths = paths
def joinpath(self, *pathsegments):
"""Combine this path with one or several arguments, and return a
new path representing either a subpath (if all arguments are relative
paths) or a totally different path (if one of the arguments is
anchored).
"""
return self.with_segments(self, *pathsegments)
def __truediv__(self, key):
try:
return self.with_segments(self, key)
except TypeError:
return NotImplemented
def __rtruediv__(self, key):
try:
return self.with_segments(key, self)
except TypeError:
return NotImplemented
def __reduce__(self):
return self.__class__, tuple(self._raw_paths)
def __repr__(self):
return "{}({!r})".format(self.__class__.__name__, self.as_posix())
def __fspath__(self):
return str(self)
def __bytes__(self):
"""Return the bytes representation of the path. This is only
recommended to use under Unix."""
return os.fsencode(self)
@property
def _str_normcase(self):
# String with normalized case, for hashing and equality checks
try:
return self._str_normcase_cached
except AttributeError:
if self.parser is posixpath:
self._str_normcase_cached = str(self)
else:
self._str_normcase_cached = str(self).lower()
return self._str_normcase_cached
def __hash__(self):
try:
return self._hash
except AttributeError:
self._hash = hash(self._str_normcase)
return self._hash
def __eq__(self, other):
if not isinstance(other, PurePath):
return NotImplemented
return self._str_normcase == other._str_normcase and self.parser is other.parser
@property
def _parts_normcase(self):
# Cached parts with normalized case, for comparisons.
try:
return self._parts_normcase_cached
except AttributeError:
self._parts_normcase_cached = self._str_normcase.split(self.parser.sep)
return self._parts_normcase_cached
def __lt__(self, other):
if not isinstance(other, PurePath) or self.parser is not other.parser:
return NotImplemented
return self._parts_normcase < other._parts_normcase
def __le__(self, other):
if not isinstance(other, PurePath) or self.parser is not other.parser:
return NotImplemented
return self._parts_normcase <= other._parts_normcase
def __gt__(self, other):
if not isinstance(other, PurePath) or self.parser is not other.parser:
return NotImplemented
return self._parts_normcase > other._parts_normcase
def __ge__(self, other):
if not isinstance(other, PurePath) or self.parser is not other.parser:
return NotImplemented
return self._parts_normcase >= other._parts_normcase
def __str__(self):
"""Return the string representation of the path, suitable for
passing to system calls."""
try:
return self._str
except AttributeError:
self._str = self._format_parsed_parts(self.drive, self.root,
self._tail) or '.'
return self._str
@classmethod
def _format_parsed_parts(cls, drv, root, tail):
if drv or root:
return drv + root + cls.parser.sep.join(tail)
elif tail and cls.parser.splitdrive(tail[0])[0]:
tail = ['.'] + tail
return cls.parser.sep.join(tail)
def _from_parsed_parts(self, drv, root, tail):
path = self._from_parsed_string(self._format_parsed_parts(drv, root, tail))
path._drv = drv
path._root = root
path._tail_cached = tail
return path
def _from_parsed_string(self, path_str):
path = self.with_segments(path_str)
path._str = path_str or '.'
return path
@classmethod
def _parse_path(cls, path):
if not path:
return '', '', []
sep = cls.parser.sep
altsep = cls.parser.altsep
if altsep:
path = path.replace(altsep, sep)
drv, root, rel = cls.parser.splitroot(path)
if not root and drv.startswith(sep) and not drv.endswith(sep):
drv_parts = drv.split(sep)
if len(drv_parts) == 4 and drv_parts[2] not in '?.':
# e.g. //server/share
root = sep
elif len(drv_parts) == 6:
# e.g. //?/unc/server/share
root = sep
parsed = [sys.intern(str(x)) for x in rel.split(sep) if x and x != '.']
return drv, root, parsed
@property
def _raw_path(self):
"""The joined but unnormalized path."""
paths = self._raw_paths
if len(paths) == 0:
path = ''
elif len(paths) == 1:
path = paths[0]
else:
path = self.parser.join(*paths)
return path
@property
def drive(self):
"""The drive prefix (letter or UNC path), if any."""
try:
return self._drv
except AttributeError:
self._drv, self._root, self._tail_cached = self._parse_path(self._raw_path)
return self._drv
@property
def root(self):
"""The root of the path, if any."""
try:
return self._root
except AttributeError:
self._drv, self._root, self._tail_cached = self._parse_path(self._raw_path)
return self._root
@property
def _tail(self):
try:
return self._tail_cached
except AttributeError:
self._drv, self._root, self._tail_cached = self._parse_path(self._raw_path)
return self._tail_cached
@property
def anchor(self):
"""The concatenation of the drive and root, or ''."""
return self.drive + self.root
@property
def parts(self):
"""An object providing sequence-like access to the
components in the filesystem path."""
if self.drive or self.root:
return (self.drive + self.root,) + tuple(self._tail)
else:
return tuple(self._tail)
@property
def parent(self):
"""The logical parent of the path."""
drv = self.drive
root = self.root
tail = self._tail
if not tail:
return self
return self._from_parsed_parts(drv, root, tail[:-1])
@property
def parents(self):
"""A sequence of this path's logical parents."""
# The value of this property should not be cached on the path object,
# as doing so would introduce a reference cycle.
return _PathParents(self)
@property
def name(self):
"""The final path component, if any."""
tail = self._tail
if not tail:
return ''
return tail[-1]
def with_name(self, name):
"""Return a new path with the file name changed."""
p = self.parser
if not name or p.sep in name or (p.altsep and p.altsep in name) or name == '.':
raise ValueError(f"Invalid name {name!r}")
tail = self._tail.copy()
if not tail:
raise ValueError(f"{self!r} has an empty name")
tail[-1] = name
return self._from_parsed_parts(self.drive, self.root, tail)
@property
def stem(self):
"""The final path component, minus its last suffix."""
name = self.name
i = name.rfind('.')
if i != -1:
stem = name[:i]
# Stem must contain at least one non-dot character.
if stem.lstrip('.'):
return stem
return name
@property
def suffix(self):
"""
The final component's last suffix, if any.
This includes the leading period. For example: '.txt'
"""
name = self.name.lstrip('.')
i = name.rfind('.')
if i != -1:
return name[i:]
return ''
@property
def suffixes(self):
"""
A list of the final component's suffixes, if any.
These include the leading periods. For example: ['.tar', '.gz']
"""
return ['.' + ext for ext in self.name.lstrip('.').split('.')[1:]]
def relative_to(self, other, *, walk_up=False):
"""Return the relative path to another path identified by the passed
arguments. If the operation is not possible (because this is not
related to the other path), raise ValueError.
The *walk_up* parameter controls whether `..` may be used to resolve
the path.
"""
if not isinstance(other, PurePath):
other = self.with_segments(other)
for step, path in enumerate(chain([other], other.parents)):
if path == self or path in self.parents:
break
elif not walk_up:
raise ValueError(f"{str(self)!r} is not in the subpath of {str(other)!r}")
elif path.name == '..':
raise ValueError(f"'..' segment in {str(other)!r} cannot be walked")
else:
raise ValueError(f"{str(self)!r} and {str(other)!r} have different anchors")
parts = ['..'] * step + self._tail[len(path._tail):]
return self._from_parsed_parts('', '', parts)
def is_relative_to(self, other):
"""Return True if the path is relative to another path or False.
"""
if not isinstance(other, PurePath):
other = self.with_segments(other)
return other == self or other in self.parents
def is_absolute(self):
"""True if the path is absolute (has both a root and, if applicable,
a drive)."""
if self.parser is posixpath:
# Optimization: work with raw paths on POSIX.
for path in self._raw_paths:
if path.startswith('/'):
return True
return False
return self.parser.isabs(self)
def is_reserved(self):
"""Return True if the path contains one of the special names reserved
by the system, if any."""
import warnings
msg = ("pathlib.PurePath.is_reserved() is deprecated and scheduled "
"for removal in Python 3.15. Use os.path.isreserved() to "
"detect reserved paths on Windows.")
warnings.warn(msg, DeprecationWarning, stacklevel=2)
if self.parser is ntpath:
return self.parser.isreserved(self)
return False
def as_uri(self):
"""Return the path as a URI."""
if not self.is_absolute():
raise ValueError("relative path can't be expressed as a file URI")
drive = self.drive
if len(drive) == 2 and drive[1] == ':':
# It's a path on a local drive => 'file:///c:/a/b'
prefix = 'file:///' + drive
path = self.as_posix()[2:]
elif drive:
# It's a path on a network drive => 'file://host/share/a/b'
prefix = 'file:'
path = self.as_posix()
else:
# It's a posix path => 'file:///etc/hosts'
prefix = 'file://'
path = str(self)
from urllib.parse import quote_from_bytes
return prefix + quote_from_bytes(os.fsencode(path))
@property
def _pattern_str(self):
"""The path expressed as a string, for use in pattern-matching."""
# The string representation of an empty path is a single dot ('.'). Empty
# paths shouldn't match wildcards, so we change it to the empty string.
path_str = str(self)
return '' if path_str == '.' else path_str
# Subclassing os.PathLike makes isinstance() checks slower,
# which in turn makes Path construction slower. Register instead!
os.PathLike.register(PurePath)
class PurePosixPath(PurePath):
"""PurePath subclass for non-Windows systems.
On a POSIX system, instantiating a PurePath should return this object.
However, you can also instantiate it directly on any system.
"""
parser = posixpath
__slots__ = ()
class PureWindowsPath(PurePath):
"""PurePath subclass for Windows systems.
On a Windows system, instantiating a PurePath should return this object.
However, you can also instantiate it directly on any system.
"""
parser = ntpath
__slots__ = ()
class Path(PathBase, PurePath):
"""PurePath subclass that can make system calls.
Path represents a filesystem path but unlike PurePath, also offers
methods to do system calls on path objects. Depending on your system,
instantiating a Path will return either a PosixPath or a WindowsPath
object. You can also instantiate a PosixPath or WindowsPath directly,
but cannot instantiate a WindowsPath on a POSIX system or vice versa.
"""
__slots__ = ()
as_uri = PurePath.as_uri
@classmethod
def _unsupported_msg(cls, attribute):
return f"{cls.__name__}.{attribute} is unsupported on this system"
def __new__(cls, *args, **kwargs):
if cls is Path:
cls = WindowsPath if os.name == 'nt' else PosixPath
return object.__new__(cls)
def stat(self, *, follow_symlinks=True):
"""
Return the result of the stat() system call on this path, like
os.stat() does.
"""
return os.stat(self, follow_symlinks=follow_symlinks)
def exists(self, *, follow_symlinks=True):
"""
Whether this path exists.
This method normally follows symlinks; to check whether a symlink exists,
add the argument follow_symlinks=False.
"""
if follow_symlinks:
return os.path.exists(self)
return os.path.lexists(self)
def is_dir(self, *, follow_symlinks=True):
"""
Whether this path is a directory.
"""
if follow_symlinks:
return os.path.isdir(self)
return PathBase.is_dir(self, follow_symlinks=follow_symlinks)
def is_file(self, *, follow_symlinks=True):
"""
Whether this path is a regular file (also True for symlinks pointing
to regular files).
"""
if follow_symlinks:
return os.path.isfile(self)
return PathBase.is_file(self, follow_symlinks=follow_symlinks)
def is_mount(self):
"""
Check if this path is a mount point
"""
return os.path.ismount(self)
def is_symlink(self):
"""
Whether this path is a symbolic link.
"""
return os.path.islink(self)
def is_junction(self):
"""
Whether this path is a junction.
"""
return os.path.isjunction(self)
def open(self, mode='r', buffering=-1, encoding=None,
errors=None, newline=None):
"""
Open the file pointed to by this path and return a file object, as
the built-in open() function does.
"""
if "b" not in mode:
encoding = io.text_encoding(encoding)
return io.open(self, mode, buffering, encoding, errors, newline)
def read_text(self, encoding=None, errors=None, newline=None):
"""
Open the file in text mode, read it, and close the file.
"""
# Call io.text_encoding() here to ensure any warning is raised at an
# appropriate stack level.
encoding = io.text_encoding(encoding)
return PathBase.read_text(self, encoding, errors, newline)
def write_text(self, data, encoding=None, errors=None, newline=None):
"""
Open the file in text mode, write to it, and close the file.
"""
# Call io.text_encoding() here to ensure any warning is raised at an
# appropriate stack level.
encoding = io.text_encoding(encoding)
return PathBase.write_text(self, data, encoding, errors, newline)
_remove_leading_dot = operator.itemgetter(slice(2, None))
_remove_trailing_slash = operator.itemgetter(slice(-1))
def _filter_trailing_slash(self, paths):
sep = self.parser.sep
anchor_len = len(self.anchor)
for path_str in paths:
if len(path_str) > anchor_len and path_str[-1] == sep:
path_str = path_str[:-1]
yield path_str
def iterdir(self):
"""Yield path objects of the directory contents.
The children are yielded in arbitrary order, and the
special entries '.' and '..' are not included.
"""
root_dir = str(self)
with os.scandir(root_dir) as scandir_it:
paths = [entry.path for entry in scandir_it]
if root_dir == '.':
paths = map(self._remove_leading_dot, paths)
return map(self._from_parsed_string, paths)
def glob(self, pattern, *, case_sensitive=None, recurse_symlinks=False):
"""Iterate over this subtree and yield all existing files (of any
kind, including directories) matching the given relative pattern.
"""
sys.audit("pathlib.Path.glob", self, pattern)
if not isinstance(pattern, PurePath):
pattern = self.with_segments(pattern)
if pattern.anchor:
raise NotImplementedError("Non-relative patterns are unsupported")
parts = pattern._tail.copy()
if not parts:
raise ValueError("Unacceptable pattern: {!r}".format(pattern))
raw = pattern._raw_path
if raw[-1] in (self.parser.sep, self.parser.altsep):
# GH-65238: pathlib doesn't preserve trailing slash. Add it back.
parts.append('')
select = self._glob_selector(parts[::-1], case_sensitive, recurse_symlinks)
root = str(self)
paths = select(root)
# Normalize results
if root == '.':
paths = map(self._remove_leading_dot, paths)
if parts[-1] == '':
paths = map(self._remove_trailing_slash, paths)
elif parts[-1] == '**':
paths = self._filter_trailing_slash(paths)
paths = map(self._from_parsed_string, paths)
return paths
def rglob(self, pattern, *, case_sensitive=None, recurse_symlinks=False):
"""Recursively yield all existing files (of any kind, including
directories) matching the given relative pattern, anywhere in
this subtree.
"""
sys.audit("pathlib.Path.rglob", self, pattern)
if not isinstance(pattern, PurePath):
pattern = self.with_segments(pattern)
pattern = '**' / pattern
return self.glob(pattern, case_sensitive=case_sensitive, recurse_symlinks=recurse_symlinks)
def walk(self, top_down=True, on_error=None, follow_symlinks=False):
"""Walk the directory tree from this directory, similar to os.walk()."""
sys.audit("pathlib.Path.walk", self, on_error, follow_symlinks)
root_dir = str(self)
if not follow_symlinks:
follow_symlinks = os._walk_symlinks_as_files
results = os.walk(root_dir, top_down, on_error, follow_symlinks)
for path_str, dirnames, filenames in results:
if root_dir == '.':
path_str = path_str[2:]
yield self._from_parsed_string(path_str), dirnames, filenames
def absolute(self):
"""Return an absolute version of this path
No normalization or symlink resolution is performed.
Use resolve() to resolve symlinks and remove '..' segments.
"""
if self.is_absolute():
return self
if self.root:
drive = os.path.splitroot(os.getcwd())[0]
return self._from_parsed_parts(drive, self.root, self._tail)
if self.drive:
# There is a CWD on each drive-letter drive.
cwd = os.path.abspath(self.drive)
else:
cwd = os.getcwd()
if not self._tail:
# Fast path for "empty" paths, e.g. Path("."), Path("") or Path().
# We pass only one argument to with_segments() to avoid the cost
# of joining, and we exploit the fact that getcwd() returns a
# fully-normalized string by storing it in _str. This is used to
# implement Path.cwd().
return self._from_parsed_string(cwd)
drive, root, rel = os.path.splitroot(cwd)
if not rel:
return self._from_parsed_parts(drive, root, self._tail)
tail = rel.split(self.parser.sep)
tail.extend(self._tail)
return self._from_parsed_parts(drive, root, tail)
def resolve(self, strict=False):
"""
Make the path absolute, resolving all symlinks on the way and also
normalizing it.
"""
return self.with_segments(os.path.realpath(self, strict=strict))
if pwd:
def owner(self, *, follow_symlinks=True):
"""
Return the login name of the file owner.
"""
uid = self.stat(follow_symlinks=follow_symlinks).st_uid
return pwd.getpwuid(uid).pw_name
if grp:
def group(self, *, follow_symlinks=True):
"""
Return the group name of the file gid.
"""
gid = self.stat(follow_symlinks=follow_symlinks).st_gid
return grp.getgrgid(gid).gr_name
if hasattr(os, "readlink"):
def readlink(self):
"""
Return the path to which the symbolic link points.
"""
return self.with_segments(os.readlink(self))
def touch(self, mode=0o666, exist_ok=True):
"""
Create this file with the given access mode, if it doesn't exist.
"""
if exist_ok:
# First try to bump modification time
# Implementation note: GNU touch uses the UTIME_NOW option of
# the utimensat() / futimens() functions.
try:
os.utime(self, None)
except OSError:
# Avoid exception chaining
pass
else:
return
flags = os.O_CREAT | os.O_WRONLY
if not exist_ok:
flags |= os.O_EXCL
fd = os.open(self, flags, mode)
os.close(fd)
def mkdir(self, mode=0o777, parents=False, exist_ok=False):
"""
Create a new directory at this given path.
"""
try:
os.mkdir(self, mode)
except FileNotFoundError:
if not parents or self.parent == self:
raise
self.parent.mkdir(parents=True, exist_ok=True)
self.mkdir(mode, parents=False, exist_ok=exist_ok)
except OSError:
# Cannot rely on checking for EEXIST, since the operating system
# could give priority to other errors like EACCES or EROFS
if not exist_ok or not self.is_dir():
raise
_readable_metadata = _writable_metadata = file_metadata_keys
_read_metadata = read_file_metadata
_write_metadata = write_file_metadata
if copyfile:
def copy(self, target, *, follow_symlinks=True, preserve_metadata=False):
"""
Copy the contents of this file to the given target. If this file is a
symlink and follow_symlinks is false, a symlink will be created at the
target.
"""
try:
target = os.fspath(target)
except TypeError:
if not isinstance(target, PathBase):
raise
else:
try:
copyfile(os.fspath(self), target, follow_symlinks)
return
except UnsupportedOperation:
pass # Fall through to generic code.
PathBase.copy(self, target, follow_symlinks=follow_symlinks,
preserve_metadata=preserve_metadata)
def chmod(self, mode, *, follow_symlinks=True):
"""
Change the permissions of the path, like os.chmod().
"""
os.chmod(self, mode, follow_symlinks=follow_symlinks)
def unlink(self, missing_ok=False):
"""
Remove this file or link.
If the path is a directory, use rmdir() instead.
"""
try:
os.unlink(self)
except FileNotFoundError:
if not missing_ok:
raise
def rmdir(self):
"""
Remove this directory. The directory must be empty.
"""
os.rmdir(self)
def rename(self, target):
"""
Rename this path to the target path.
The target path may be absolute or relative. Relative paths are
interpreted relative to the current working directory, *not* the
directory of the Path object.
Returns the new Path instance pointing to the target path.
"""
os.rename(self, target)
return self.with_segments(target)
def replace(self, target):
"""
Rename this path to the target path, overwriting if that path exists.
The target path may be absolute or relative. Relative paths are
interpreted relative to the current working directory, *not* the
directory of the Path object.
Returns the new Path instance pointing to the target path.
"""
os.replace(self, target)
return self.with_segments(target)
if hasattr(os, "symlink"):
def symlink_to(self, target, target_is_directory=False):
"""
Make this path a symlink pointing to the target path.
Note the order of arguments (link, target) is the reverse of os.symlink.
"""
os.symlink(target, self, target_is_directory)
if hasattr(os, "link"):
def hardlink_to(self, target):
"""
Make this path a hard link pointing to the same file as *target*.
Note the order of arguments (self, target) is the reverse of os.link's.
"""
os.link(target, self)
def expanduser(self):
""" Return a new path with expanded ~ and ~user constructs
(as returned by os.path.expanduser)
"""
if (not (self.drive or self.root) and
self._tail and self._tail[0][:1] == '~'):
homedir = os.path.expanduser(self._tail[0])
if homedir[:1] == "~":
raise RuntimeError("Could not determine home directory.")
drv, root, tail = self._parse_path(homedir)
return self._from_parsed_parts(drv, root, tail + self._tail[1:])
return self
@classmethod
def from_uri(cls, uri):
"""Return a new path from the given 'file' URI."""
if not uri.startswith('file:'):
raise ValueError(f"URI does not start with 'file:': {uri!r}")
path = uri[5:]
if path[:3] == '///':
# Remove empty authority
path = path[2:]
elif path[:12] == '//localhost/':
# Remove 'localhost' authority
path = path[11:]
if path[:3] == '///' or (path[:1] == '/' and path[2:3] in ':|'):
# Remove slash before DOS device/UNC path
path = path[1:]
if path[1:2] == '|':
# Replace bar with colon in DOS drive
path = path[:1] + ':' + path[2:]
from urllib.parse import unquote_to_bytes
path = cls(os.fsdecode(unquote_to_bytes(path)))
if not path.is_absolute():
raise ValueError(f"URI is not absolute: {uri!r}")
return path
class PosixPath(Path, PurePosixPath):
"""Path subclass for non-Windows systems.
On a POSIX system, instantiating a Path should return this object.
"""
__slots__ = ()
if os.name == 'nt':
def __new__(cls, *args, **kwargs):
raise UnsupportedOperation(
f"cannot instantiate {cls.__name__!r} on your system")
class WindowsPath(Path, PureWindowsPath):
"""Path subclass for Windows systems.
On a Windows system, instantiating a Path should return this object.
"""
__slots__ = ()
if os.name != 'nt':
def __new__(cls, *args, **kwargs):
raise UnsupportedOperation(
f"cannot instantiate {cls.__name__!r} on your system")