FM / python3.10

/snap/core22/2437/usr/lib/python3.10

Name	Size	Mode	Actions
asyncio/	-	0755	rm
collections/	-	0755	rm
concurrent/	-	0755	rm
ctypes/	-	0755	rm
curses/	-	0755	rm
dbm/	-	0755	rm
distutils/	-	0755	rm
email/	-	0755	rm
encodings/	-	0755	rm
html/	-	0755	rm
http/	-	0755	rm
importlib/	-	0755	rm
json/	-	0755	rm
lib-dynload/	-	0755	rm
lib2to3/	-	0755	rm
logging/	-	0755	rm
multiprocessing/	-	0755	rm
pydoc_data/	-	0755	rm
sqlite3/	-	0755	rm
test/	-	0755	rm
unittest/	-	0755	rm
urllib/	-	0755	rm
venv/	-	0755	rm
wsgiref/	-	0755	rm
xml/	-	0755	rm
xmlrpc/	-	0755	rm
zoneinfo/	-	0755	rm
__pycache__/	-	0755	rm
abc.py	6522	0644	edit dl rm
aifc.py	32605	0644	edit dl rm
antigravity.py	500	0644	edit dl rm
argparse.py	98839	0644	edit dl rm
ast.py	59900	0644	edit dl rm
asynchat.py	11520	0644	edit dl rm
asyncore.py	20268	0644	edit dl rm
base64.py	20846	0755	edit dl rm
bdb.py	32396	0644	edit dl rm
binhex.py	14784	0644	edit dl rm
bisect.py	3135	0644	edit dl rm
bz2.py	11847	0644	edit dl rm
calendar.py	24575	0644	edit dl rm
cgi.py	34099	0755	edit dl rm
cgitb.py	12096	0644	edit dl rm
chunk.py	5435	0644	edit dl rm
cmd.py	14860	0644	edit dl rm
code.py	10622	0644	edit dl rm
codecs.py	36714	0644	edit dl rm
codeop.py	5609	0644	edit dl rm
colorsys.py	4017	0644	edit dl rm
compileall.py	20252	0644	edit dl rm
configparser.py	54612	0644	edit dl rm
contextlib.py	25882	0644	edit dl rm
contextvars.py	129	0644	edit dl rm
copy.py	8681	0644	edit dl rm
copyreg.py	7426	0644	edit dl rm
cProfile.py	6347	0755	edit dl rm
crypt.py	3848	0644	edit dl rm
csv.py	16030	0644	edit dl rm
dataclasses.py	56390	0644	edit dl rm
datetime.py	88086	0644	edit dl rm
decimal.py	320	0644	edit dl rm
difflib.py	83308	0644	edit dl rm
dis.py	20020	0644	edit dl rm
doctest.py	105143	0644	edit dl rm
enum.py	39831	0644	edit dl rm
filecmp.py	10178	0644	edit dl rm
fileinput.py	16442	0644	edit dl rm
fnmatch.py	6713	0644	edit dl rm
fractions.py	28242	0644	edit dl rm
ftplib.py	35496	0644	edit dl rm
functools.py	38076	0644	edit dl rm
genericpath.py	4975	0644	edit dl rm
getopt.py	7489	0644	edit dl rm
getpass.py	5990	0644	edit dl rm
gettext.py	27693	0644	edit dl rm
glob.py	7888	0644	edit dl rm
graphlib.py	9573	0644	edit dl rm
gzip.py	21849	0644	edit dl rm
hashlib.py	10229	0644	edit dl rm
heapq.py	22877	0644	edit dl rm
hmac.py	7717	0644	edit dl rm
imaplib.py	54866	0644	edit dl rm
imghdr.py	3808	0644	edit dl rm
imp.py	10591	0644	edit dl rm
inspect.py	124378	0644	edit dl rm
io.py	4196	0644	edit dl rm
ipaddress.py	77780	0644	edit dl rm
keyword.py	1061	0644	edit dl rm
LICENSE.txt	13936	0644	edit dl rm
linecache.py	5690	0644	edit dl rm
locale.py	78128	0644	edit dl rm
lzma.py	13277	0644	edit dl rm
mailbox.py	78794	0644	edit dl rm
mailcap.py	9116	0644	edit dl rm
mimetypes.py	22539	0644	edit dl rm
modulefinder.py	24401	0644	edit dl rm
netrc.py	5747	0644	edit dl rm
nntplib.py	41023	0644	edit dl rm
ntpath.py	27561	0644	edit dl rm
nturl2path.py	2887	0644	edit dl rm
numbers.py	10348	0644	edit dl rm
opcode.py	5902	0644	edit dl rm
operator.py	10751	0644	edit dl rm
optparse.py	60369	0644	edit dl rm
os.py	39557	0644	edit dl rm
pathlib.py	49575	0644	edit dl rm
pdb.py	63225	0755	edit dl rm
pickle.py	64949	0644	edit dl rm
pickletools.py	93486	0644	edit dl rm
pipes.py	8914	0644	edit dl rm
pkgutil.py	24576	0644	edit dl rm
platform.py	42022	0755	edit dl rm
plistlib.py	28592	0644	edit dl rm
poplib.py	15198	0644	edit dl rm
posixpath.py	16123	0644	edit dl rm
pprint.py	24444	0644	edit dl rm
profile.py	22883	0755	edit dl rm
pstats.py	29326	0644	edit dl rm
pty.py	5213	0644	edit dl rm
pyclbr.py	11396	0644	edit dl rm
pydoc.py	109884	0755	edit dl rm
py_compile.py	7878	0644	edit dl rm
queue.py	11496	0644	edit dl rm
quopri.py	7267	0755	edit dl rm
random.py	33221	0644	edit dl rm
re.py	15860	0644	edit dl rm
reprlib.py	5267	0644	edit dl rm
rlcompleter.py	7817	0644	edit dl rm
runpy.py	13111	0644	edit dl rm
sched.py	6351	0644	edit dl rm
secrets.py	2036	0644	edit dl rm
selectors.py	19536	0644	edit dl rm
shelve.py	8560	0644	edit dl rm
shlex.py	13501	0644	edit dl rm
shutil.py	54572	0644	edit dl rm
signal.py	2438	0644	edit dl rm
site.py	23667	0644	edit dl rm
sitecustomize.py	155	0644	edit dl rm
smtpd.py	35165	0755	edit dl rm
smtplib.py	45418	0755	edit dl rm
sndhdr.py	7099	0644	edit dl rm
socket.py	36785	0644	edit dl rm
socketserver.py	27296	0644	edit dl rm
sre_compile.py	27973	0644	edit dl rm
sre_constants.py	7177	0644	edit dl rm
sre_parse.py	40779	0644	edit dl rm
ssl.py	53725	0644	edit dl rm
stat.py	5485	0644	edit dl rm
statistics.py	43205	0644	edit dl rm
string.py	10566	0644	edit dl rm
stringprep.py	12917	0644	edit dl rm
struct.py	257	0644	edit dl rm
subprocess.py	84917	0644	edit dl rm
sunau.py	18158	0644	edit dl rm
symtable.py	10217	0644	edit dl rm
sysconfig.py	29398	0644	edit dl rm
tabnanny.py	11299	0755	edit dl rm
tarfile.py	107453	0755	edit dl rm
telnetlib.py	23254	0644	edit dl rm
tempfile.py	34567	0644	edit dl rm
textwrap.py	19772	0644	edit dl rm
this.py	1003	0644	edit dl rm
threading.py	57200	0644	edit dl rm
timeit.py	13495	0755	edit dl rm
token.py	2386	0644	edit dl rm
tokenize.py	25921	0644	edit dl rm
trace.py	29215	0755	edit dl rm
traceback.py	26222	0644	edit dl rm
tracemalloc.py	18047	0644	edit dl rm
tty.py	879	0644	edit dl rm
turtle.py	143760	0644	edit dl rm
types.py	10117	0644	edit dl rm
typing.py	92557	0644	edit dl rm
uu.py	7300	0755	edit dl rm
uuid.py	27500	0644	edit dl rm
warnings.py	19688	0644	edit dl rm
wave.py	18004	0644	edit dl rm
weakref.py	21560	0644	edit dl rm
webbrowser.py	24245	0755	edit dl rm
xdrlib.py	5913	0644	edit dl rm
zipapp.py	7535	0644	edit dl rm
zipfile.py	90851	0644	edit dl rm
zipimport.py	30891	0644	edit dl rm
_aix_support.py	3270	0644	edit dl rm
_bootsubprocess.py	2675	0644	edit dl rm
_collections_abc.py	32284	0644	edit dl rm
_compat_pickle.py	8749	0644	edit dl rm
_compression.py	5681	0644	edit dl rm
_distutils_system_mod.py	6312	0644	edit dl rm
_markupbase.py	14653	0644	edit dl rm
_osx_support.py	21787	0644	edit dl rm
_pydecimal.py	228676	0644	edit dl rm
_pyio.py	94467	0644	edit dl rm
_py_abc.py	6189	0644	edit dl rm
_sitebuiltins.py	3128	0644	edit dl rm
_strptime.py	25277	0644	edit dl rm
_sysconfigdata__linux_x86_64-linux-gnu.py	27484	0644	edit dl rm
_sysconfigdata__x86_64-linux-gnu.py	27484	0644	edit dl rm
_threading_local.py	7220	0644	edit dl rm
_weakrefset.py	5923	0644	edit dl rm
__future__.py	5155	0644	edit dl rm
__phello__.foo.py	64	0644	edit dl rm

Edit: /snap/core22/2437/usr/lib/python3.10/ntpath.py (27561B)

# Module 'ntpath' -- common operations on WinNT/Win95 pathnames
"""Common pathname manipulations, WindowsNT/95 version.

Instead of importing this module directly, import os and refer to this
module as os.path.
"""

# strings representing various path-related bits and pieces
# These are primarily for export; internally, they are hardcoded.
# Should be set before imports for resolving cyclic dependency.
curdir = '.'
pardir = '..'
extsep = '.'
sep = '\\'
pathsep = ';'
altsep = '/'
defpath = '.;C:\\bin'
devnull = 'nul'

import os
import sys
import stat
import genericpath
from genericpath import *

__all__ = ["normcase","isabs","join","splitdrive","split","splitext",
           "basename","dirname","commonprefix","getsize","getmtime",
           "getatime","getctime", "islink","exists","lexists","isdir","isfile",
           "ismount", "expanduser","expandvars","normpath","abspath",
           "curdir","pardir","sep","pathsep","defpath","altsep",
           "extsep","devnull","realpath","supports_unicode_filenames","relpath",
           "samefile", "sameopenfile", "samestat", "commonpath"]

def _get_bothseps(path):
    if isinstance(path, bytes):
        return b'\\/'
    else:
        return '\\/'

# Normalize the case of a pathname and map slashes to backslashes.
# Other normalizations (such as optimizing '../' away) are not done
# (this is done by normpath).

try:
    from _winapi import (
        LCMapStringEx as _LCMapStringEx,
        LOCALE_NAME_INVARIANT as _LOCALE_NAME_INVARIANT,
        LCMAP_LOWERCASE as _LCMAP_LOWERCASE)

def normcase(s):
        """Normalize case of pathname.

Makes all characters lowercase and all slashes into backslashes.
        """
        s = os.fspath(s)
        if not s:
            return s
        if isinstance(s, bytes):
            encoding = sys.getfilesystemencoding()
            s = s.decode(encoding, 'surrogateescape').replace('/', '\\')
            s = _LCMapStringEx(_LOCALE_NAME_INVARIANT,
                               _LCMAP_LOWERCASE, s)
            return s.encode(encoding, 'surrogateescape')
        else:
            return _LCMapStringEx(_LOCALE_NAME_INVARIANT,
                                  _LCMAP_LOWERCASE,
                                  s.replace('/', '\\'))
except ImportError:
    def normcase(s):
        """Normalize case of pathname.

Makes all characters lowercase and all slashes into backslashes.
        """
        s = os.fspath(s)
        if isinstance(s, bytes):
            return os.fsencode(os.fsdecode(s).replace('/', '\\').lower())
        return s.replace('/', '\\').lower()

# Return whether a path is absolute.
# Trivial in Posix, harder on Windows.
# For Windows it is absolute if it starts with a slash or backslash (current
# volume), or if a pathname after the volume-letter-and-colon or UNC-resource
# starts with a slash or backslash.

def isabs(s):
    """Test whether a path is absolute"""
    s = os.fspath(s)
    # Paths beginning with \\?\ are always absolute, but do not
    # necessarily contain a drive.
    if isinstance(s, bytes):
        if s.replace(b'/', b'\\').startswith(b'\\\\?\\'):
            return True
    else:
        if s.replace('/', '\\').startswith('\\\\?\\'):
            return True
    s = splitdrive(s)[1]
    return len(s) > 0 and s[0] in _get_bothseps(s)

# Join two (or more) paths.
def join(path, *paths):
    path = os.fspath(path)
    if isinstance(path, bytes):
        sep = b'\\'
        seps = b'\\/'
        colon = b':'
    else:
        sep = '\\'
        seps = '\\/'
        colon = ':'
    try:
        if not paths:
            path[:0] + sep  #23780: Ensure compatible data type even if p is null.
        result_drive, result_path = splitdrive(path)
        for p in map(os.fspath, paths):
            p_drive, p_path = splitdrive(p)
            if p_path and p_path[0] in seps:
                # Second path is absolute
                if p_drive or not result_drive:
                    result_drive = p_drive
                result_path = p_path
                continue
            elif p_drive and p_drive != result_drive:
                if p_drive.lower() != result_drive.lower():
                    # Different drives => ignore the first path entirely
                    result_drive = p_drive
                    result_path = p_path
                    continue
                # Same drive in different case
                result_drive = p_drive
            # Second path is relative to the first
            if result_path and result_path[-1] not in seps:
                result_path = result_path + sep
            result_path = result_path + p_path
        ## add separator between UNC and non-absolute path
        if (result_path and result_path[0] not in seps and
            result_drive and result_drive[-1:] != colon):
            return result_drive + sep + result_path
        return result_drive + result_path
    except (TypeError, AttributeError, BytesWarning):
        genericpath._check_arg_types('join', path, *paths)
        raise

# Split a path in a drive specification (a drive letter followed by a
# colon) and the path specification.
# It is always true that drivespec + pathspec == p
def splitdrive(p):
    """Split a pathname into drive/UNC sharepoint and relative path specifiers.
    Returns a 2-tuple (drive_or_unc, path); either part may be empty.

If you assign
        result = splitdrive(p)
    It is always true that:
        result[0] + result[1] == p

If the path contained a drive letter, drive_or_unc will contain everything
    up to and including the colon.  e.g. splitdrive("c:/dir") returns ("c:", "/dir")

If the path contained a UNC path, the drive_or_unc will contain the host name
    and share up to but not including the fourth directory separator character.
    e.g. splitdrive("//host/computer/dir") returns ("//host/computer", "/dir")

Paths cannot contain both a drive letter and a UNC path.

"""
    p = os.fspath(p)
    if len(p) >= 2:
        if isinstance(p, bytes):
            sep = b'\\'
            altsep = b'/'
            colon = b':'
        else:
            sep = '\\'
            altsep = '/'
            colon = ':'
        normp = p.replace(altsep, sep)
        if (normp[0:2] == sep*2) and (normp[2:3] != sep):
            # is a UNC path:
            # vvvvvvvvvvvvvvvvvvvv drive letter or UNC path
            # \\machine\mountpoint\directory\etc\...
            #           directory ^^^^^^^^^^^^^^^
            index = normp.find(sep, 2)
            if index == -1:
                return p[:0], p
            index2 = normp.find(sep, index + 1)
            # a UNC path can't have two slashes in a row
            # (after the initial two)
            if index2 == index + 1:
                return p[:0], p
            if index2 == -1:
                index2 = len(p)
            return p[:index2], p[index2:]
        if normp[1:2] == colon:
            return p[:2], p[2:]
    return p[:0], p

# Split a path in head (everything up to the last '/') and tail (the
# rest).  After the trailing '/' is stripped, the invariant
# join(head, tail) == p holds.
# The resulting head won't end in '/' unless it is the root.

def split(p):
    """Split a pathname.

Return tuple (head, tail) where tail is everything after the final slash.
    Either part may be empty."""
    p = os.fspath(p)
    seps = _get_bothseps(p)
    d, p = splitdrive(p)
    # set i to index beyond p's last slash
    i = len(p)
    while i and p[i-1] not in seps:
        i -= 1
    head, tail = p[:i], p[i:]  # now tail has no slashes
    # remove trailing slashes from head, unless it's all slashes
    head = head.rstrip(seps) or head
    return d + head, tail

# Split a path in root and extension.
# The extension is everything starting at the last dot in the last
# pathname component; the root is everything before that.
# It is always true that root + ext == p.

def splitext(p):
    p = os.fspath(p)
    if isinstance(p, bytes):
        return genericpath._splitext(p, b'\\', b'/', b'.')
    else:
        return genericpath._splitext(p, '\\', '/', '.')
splitext.__doc__ = genericpath._splitext.__doc__

# Return the tail (basename) part of a path.

def basename(p):
    """Returns the final component of a pathname"""
    return split(p)[1]

# Return the head (dirname) part of a path.

def dirname(p):
    """Returns the directory component of a pathname"""
    return split(p)[0]

# Is a path a symbolic link?
# This will always return false on systems where os.lstat doesn't exist.

def islink(path):
    """Test whether a path is a symbolic link.
    This will always return false for Windows prior to 6.0.
    """
    try:
        st = os.lstat(path)
    except (OSError, ValueError, AttributeError):
        return False
    return stat.S_ISLNK(st.st_mode)

# Being true for dangling symbolic links is also useful.

def lexists(path):
    """Test whether a path exists.  Returns True for broken symbolic links"""
    try:
        st = os.lstat(path)
    except (OSError, ValueError):
        return False
    return True

# Is a path a mount point?
# Any drive letter root (eg c:\)
# Any share UNC (eg \\server\share)
# Any volume mounted on a filesystem folder
#
# No one method detects all three situations. Historically we've lexically
# detected drive letter roots and share UNCs. The canonical approach to
# detecting mounted volumes (querying the reparse tag) fails for the most
# common case: drive letter roots. The alternative which uses GetVolumePathName
# fails if the drive letter is the result of a SUBST.
try:
    from nt import _getvolumepathname
except ImportError:
    _getvolumepathname = None
def ismount(path):
    """Test whether a path is a mount point (a drive root, the root of a
    share, or a mounted volume)"""
    path = os.fspath(path)
    seps = _get_bothseps(path)
    path = abspath(path)
    root, rest = splitdrive(path)
    if root and root[0] in seps:
        return (not rest) or (rest in seps)
    if rest in seps:
        return True

if _getvolumepathname:
        return path.rstrip(seps) == _getvolumepathname(path).rstrip(seps)
    else:
        return False

# Expand paths beginning with '~' or '~user'.
# '~' means $HOME; '~user' means that user's home directory.
# If the path doesn't begin with '~', or if the user or $HOME is unknown,
# the path is returned unchanged (leaving error reporting to whatever
# function is called with the expanded path as argument).
# See also module 'glob' for expansion of *, ? and [...] in pathnames.
# (A function should also be defined to do full *sh-style environment
# variable expansion.)

def expanduser(path):
    """Expand ~ and ~user constructs.

If user or $HOME is unknown, do nothing."""
    path = os.fspath(path)
    if isinstance(path, bytes):
        tilde = b'~'
    else:
        tilde = '~'
    if not path.startswith(tilde):
        return path
    i, n = 1, len(path)
    while i < n and path[i] not in _get_bothseps(path):
        i += 1

if 'USERPROFILE' in os.environ:
        userhome = os.environ['USERPROFILE']
    elif not 'HOMEPATH' in os.environ:
        return path
    else:
        try:
            drive = os.environ['HOMEDRIVE']
        except KeyError:
            drive = ''
        userhome = join(drive, os.environ['HOMEPATH'])

if i != 1: #~user
        target_user = path[1:i]
        if isinstance(target_user, bytes):
            target_user = os.fsdecode(target_user)
        current_user = os.environ.get('USERNAME')

if target_user != current_user:
            # Try to guess user home directory.  By default all user
            # profile directories are located in the same place and are
            # named by corresponding usernames.  If userhome isn't a
            # normal profile directory, this guess is likely wrong,
            # so we bail out.
            if current_user != basename(userhome):
                return path
            userhome = join(dirname(userhome), target_user)

if isinstance(path, bytes):
        userhome = os.fsencode(userhome)

return userhome + path[i:]

# Expand paths containing shell variable substitutions.
# The following rules apply:
#       - no expansion within single quotes
#       - '$$' is translated into '$'
#       - '%%' is translated into '%' if '%%' are not seen in %var1%%var2%
#       - ${varname} is accepted.
#       - $varname is accepted.
#       - %varname% is accepted.
#       - varnames can be made out of letters, digits and the characters '_-'
#         (though is not verified in the ${varname} and %varname% cases)
# XXX With COMMAND.COM you can use any characters in a variable name,
# XXX except '^|<>='.

_varpattern = r"'[^']*'?|%(%|[^%]*%?)|\$(\$|[-\w]+|\{[^}]*\}?)"
_varsub = None
_varsubb = None

def expandvars(path):
    """Expand shell variables of the forms $var, ${var} and %var%.

Unknown variables are left unchanged."""
    path = os.fspath(path)
    global _varsub, _varsubb
    if isinstance(path, bytes):
        if b'$' not in path and b'%' not in path:
            return path
        if not _varsubb:
            import re
            _varsubb = re.compile(_varpattern.encode(), re.ASCII).sub
        sub = _varsubb
        percent = b'%'
        brace = b'{'
        rbrace = b'}'
        dollar = b'$'
        environ = getattr(os, 'environb', None)
    else:
        if '$' not in path and '%' not in path:
            return path
        if not _varsub:
            import re
            _varsub = re.compile(_varpattern, re.ASCII).sub
        sub = _varsub
        percent = '%'
        brace = '{'
        rbrace = '}'
        dollar = '$'
        environ = os.environ

def repl(m):
        lastindex = m.lastindex
        if lastindex is None:
            return m[0]
        name = m[lastindex]
        if lastindex == 1:
            if name == percent:
                return name
            if not name.endswith(percent):
                return m[0]
            name = name[:-1]
        else:
            if name == dollar:
                return name
            if name.startswith(brace):
                if not name.endswith(rbrace):
                    return m[0]
                name = name[1:-1]

try:
            if environ is None:
                return os.fsencode(os.environ[os.fsdecode(name)])
            else:
                return environ[name]
        except KeyError:
            return m[0]

return sub(repl, path)

# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A\B.
# Previously, this function also truncated pathnames to 8+3 format,
# but as this module is called "ntpath", that's obviously wrong!

def normpath(path):
    """Normalize path, eliminating double slashes, etc."""
    path = os.fspath(path)
    if isinstance(path, bytes):
        sep = b'\\'
        altsep = b'/'
        curdir = b'.'
        pardir = b'..'
        special_prefixes = (b'\\\\.\\', b'\\\\?\\')
    else:
        sep = '\\'
        altsep = '/'
        curdir = '.'
        pardir = '..'
        special_prefixes = ('\\\\.\\', '\\\\?\\')
    if path.startswith(special_prefixes):
        # in the case of paths with these prefixes:
        # \\.\ -> device names
        # \\?\ -> literal paths
        # do not do any normalization, but return the path
        # unchanged apart from the call to os.fspath()
        return path
    path = path.replace(altsep, sep)
    prefix, path = splitdrive(path)

# collapse initial backslashes
    if path.startswith(sep):
        prefix += sep
        path = path.lstrip(sep)

comps = path.split(sep)
    i = 0
    while i < len(comps):
        if not comps[i] or comps[i] == curdir:
            del comps[i]
        elif comps[i] == pardir:
            if i > 0 and comps[i-1] != pardir:
                del comps[i-1:i+1]
                i -= 1
            elif i == 0 and prefix.endswith(sep):
                del comps[i]
            else:
                i += 1
        else:
            i += 1
    # If the path is now empty, substitute '.'
    if not prefix and not comps:
        comps.append(curdir)
    return prefix + sep.join(comps)

def _abspath_fallback(path):
    """Return the absolute version of a path as a fallback function in case
    `nt._getfullpathname` is not available or raises OSError. See bpo-31047 for
    more.

"""

path = os.fspath(path)
    if not isabs(path):
        if isinstance(path, bytes):
            cwd = os.getcwdb()
        else:
            cwd = os.getcwd()
        path = join(cwd, path)
    return normpath(path)

# Return an absolute path.
try:
    from nt import _getfullpathname

except ImportError: # not running on Windows - mock up something sensible
    abspath = _abspath_fallback

else:  # use native Windows method on Windows
    def abspath(path):
        """Return the absolute version of a path."""
        try:
            return normpath(_getfullpathname(path))
        except (OSError, ValueError):
            return _abspath_fallback(path)

try:
    from nt import _getfinalpathname, readlink as _nt_readlink
except ImportError:
    # realpath is a no-op on systems without _getfinalpathname support.
    realpath = abspath
else:
    def _readlink_deep(path):
        # These error codes indicate that we should stop reading links and
        # return the path we currently have.
        # 1: ERROR_INVALID_FUNCTION
        # 2: ERROR_FILE_NOT_FOUND
        # 3: ERROR_DIRECTORY_NOT_FOUND
        # 5: ERROR_ACCESS_DENIED
        # 21: ERROR_NOT_READY (implies drive with no media)
        # 32: ERROR_SHARING_VIOLATION (probably an NTFS paging file)
        # 50: ERROR_NOT_SUPPORTED (implies no support for reparse points)
        # 67: ERROR_BAD_NET_NAME (implies remote server unavailable)
        # 87: ERROR_INVALID_PARAMETER
        # 4390: ERROR_NOT_A_REPARSE_POINT
        # 4392: ERROR_INVALID_REPARSE_DATA
        # 4393: ERROR_REPARSE_TAG_INVALID
        allowed_winerror = 1, 2, 3, 5, 21, 32, 50, 67, 87, 4390, 4392, 4393

seen = set()
        while normcase(path) not in seen:
            seen.add(normcase(path))
            try:
                old_path = path
                path = _nt_readlink(path)
                # Links may be relative, so resolve them against their
                # own location
                if not isabs(path):
                    # If it's something other than a symlink, we don't know
                    # what it's actually going to be resolved against, so
                    # just return the old path.
                    if not islink(old_path):
                        path = old_path
                        break
                    path = normpath(join(dirname(old_path), path))
            except OSError as ex:
                if ex.winerror in allowed_winerror:
                    break
                raise
            except ValueError:
                # Stop on reparse points that are not symlinks
                break
        return path

def _getfinalpathname_nonstrict(path):
        # These error codes indicate that we should stop resolving the path
        # and return the value we currently have.
        # 1: ERROR_INVALID_FUNCTION
        # 2: ERROR_FILE_NOT_FOUND
        # 3: ERROR_DIRECTORY_NOT_FOUND
        # 5: ERROR_ACCESS_DENIED
        # 21: ERROR_NOT_READY (implies drive with no media)
        # 32: ERROR_SHARING_VIOLATION (probably an NTFS paging file)
        # 50: ERROR_NOT_SUPPORTED
        # 53: ERROR_BAD_NETPATH
        # 65: ERROR_NETWORK_ACCESS_DENIED
        # 67: ERROR_BAD_NET_NAME (implies remote server unavailable)
        # 87: ERROR_INVALID_PARAMETER
        # 123: ERROR_INVALID_NAME
        # 161: ERROR_BAD_PATHNAME
        # 1920: ERROR_CANT_ACCESS_FILE
        # 1921: ERROR_CANT_RESOLVE_FILENAME (implies unfollowable symlink)
        allowed_winerror = 1, 2, 3, 5, 21, 32, 50, 53, 65, 67, 87, 123, 161, 1920, 1921

# Non-strict algorithm is to find as much of the target directory
        # as we can and join the rest.
        tail = ''
        while path:
            try:
                path = _getfinalpathname(path)
                return join(path, tail) if tail else path
            except OSError as ex:
                if ex.winerror not in allowed_winerror:
                    raise
                try:
                    # The OS could not resolve this path fully, so we attempt
                    # to follow the link ourselves. If we succeed, join the tail
                    # and return.
                    new_path = _readlink_deep(path)
                    if new_path != path:
                        return join(new_path, tail) if tail else new_path
                except OSError:
                    # If we fail to readlink(), let's keep traversing
                    pass
                path, name = split(path)
                # TODO (bpo-38186): Request the real file name from the directory
                # entry using FindFirstFileW. For now, we will return the path
                # as best we have it
                if path and not name:
                    return path + tail
                tail = join(name, tail) if tail else name
        return tail

def realpath(path, *, strict=False):
        path = normpath(path)
        if isinstance(path, bytes):
            prefix = b'\\\\?\\'
            unc_prefix = b'\\\\?\\UNC\\'
            new_unc_prefix = b'\\\\'
            cwd = os.getcwdb()
            # bpo-38081: Special case for realpath(b'nul')
            if normcase(path) == normcase(os.fsencode(devnull)):
                return b'\\\\.\\NUL'
        else:
            prefix = '\\\\?\\'
            unc_prefix = '\\\\?\\UNC\\'
            new_unc_prefix = '\\\\'
            cwd = os.getcwd()
            # bpo-38081: Special case for realpath('nul')
            if normcase(path) == normcase(devnull):
                return '\\\\.\\NUL'
        had_prefix = path.startswith(prefix)
        if not had_prefix and not isabs(path):
            path = join(cwd, path)
        try:
            path = _getfinalpathname(path)
            initial_winerror = 0
        except OSError as ex:
            if strict:
                raise
            initial_winerror = ex.winerror
            path = _getfinalpathname_nonstrict(path)
        # The path returned by _getfinalpathname will always start with \\?\ -
        # strip off that prefix unless it was already provided on the original
        # path.
        if not had_prefix and path.startswith(prefix):
            # For UNC paths, the prefix will actually be \\?\UNC\
            # Handle that case as well.
            if path.startswith(unc_prefix):
                spath = new_unc_prefix + path[len(unc_prefix):]
            else:
                spath = path[len(prefix):]
            # Ensure that the non-prefixed path resolves to the same path
            try:
                if _getfinalpathname(spath) == path:
                    path = spath
            except OSError as ex:
                # If the path does not exist and originally did not exist, then
                # strip the prefix anyway.
                if ex.winerror == initial_winerror:
                    path = spath
        return path

# Win9x family and earlier have no Unicode filename support.
supports_unicode_filenames = (hasattr(sys, "getwindowsversion") and
                              sys.getwindowsversion()[3] >= 2)

def relpath(path, start=None):
    """Return a relative version of a path"""
    path = os.fspath(path)
    if isinstance(path, bytes):
        sep = b'\\'
        curdir = b'.'
        pardir = b'..'
    else:
        sep = '\\'
        curdir = '.'
        pardir = '..'

if start is None:
        start = curdir

if not path:
        raise ValueError("no path specified")

start = os.fspath(start)
    try:
        start_abs = abspath(normpath(start))
        path_abs = abspath(normpath(path))
        start_drive, start_rest = splitdrive(start_abs)
        path_drive, path_rest = splitdrive(path_abs)
        if normcase(start_drive) != normcase(path_drive):
            raise ValueError("path is on mount %r, start on mount %r" % (
                path_drive, start_drive))

start_list = [x for x in start_rest.split(sep) if x]
        path_list = [x for x in path_rest.split(sep) if x]
        # Work out how much of the filepath is shared by start and path.
        i = 0
        for e1, e2 in zip(start_list, path_list):
            if normcase(e1) != normcase(e2):
                break
            i += 1

rel_list = [pardir] * (len(start_list)-i) + path_list[i:]
        if not rel_list:
            return curdir
        return join(*rel_list)
    except (TypeError, ValueError, AttributeError, BytesWarning, DeprecationWarning):
        genericpath._check_arg_types('relpath', path, start)
        raise

# Return the longest common sub-path of the sequence of paths given as input.
# The function is case-insensitive and 'separator-insensitive', i.e. if the
# only difference between two paths is the use of '\' versus '/' as separator,
# they are deemed to be equal.
#
# However, the returned path will have the standard '\' separator (even if the
# given paths had the alternative '/' separator) and will have the case of the
# first path given in the sequence. Additionally, any trailing separator is
# stripped from the returned path.

def commonpath(paths):
    """Given a sequence of path names, returns the longest common sub-path."""

if not paths:
        raise ValueError('commonpath() arg is an empty sequence')

paths = tuple(map(os.fspath, paths))
    if isinstance(paths[0], bytes):
        sep = b'\\'
        altsep = b'/'
        curdir = b'.'
    else:
        sep = '\\'
        altsep = '/'
        curdir = '.'

try:
        drivesplits = [splitdrive(p.replace(altsep, sep).lower()) for p in paths]
        split_paths = [p.split(sep) for d, p in drivesplits]

try:
            isabs, = set(p[:1] == sep for d, p in drivesplits)
        except ValueError:
            raise ValueError("Can't mix absolute and relative paths") from None

# Check that all drive letters or UNC paths match. The check is made only
        # now otherwise type errors for mixing strings and bytes would not be
        # caught.
        if len(set(d for d, p in drivesplits)) != 1:
            raise ValueError("Paths don't have the same drive")

drive, path = splitdrive(paths[0].replace(altsep, sep))
        common = path.split(sep)
        common = [c for c in common if c and c != curdir]

split_paths = [[c for c in s if c and c != curdir] for s in split_paths]
        s1 = min(split_paths)
        s2 = max(split_paths)
        for i, c in enumerate(s1):
            if c != s2[i]:
                common = common[:i]
                break
        else:
            common = common[:len(s1)]

prefix = drive + sep if isabs else drive
        return prefix + sep.join(common)
    except (TypeError, AttributeError):
        genericpath._check_arg_types('commonpath', *paths)
        raise

try:
    # The genericpath.isdir implementation uses os.stat and checks the mode
    # attribute to tell whether or not the path is a directory.
    # This is overkill on Windows - just pass the path to GetFileAttributes
    # and check the attribute from there.
    from nt import _isdir as isdir
except ImportError:
    # Use genericpath.isdir as imported above.
    pass

cmd: