FM / python3.8

/snap/core20/2866/usr/lib/python3.8

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
__pycache__/	-	0755	rm
abc.py	4489	0644	edit dl rm
aifc.py	32814	0644	edit dl rm
antigravity.py	477	0644	edit dl rm
argparse.py	96311	0644	edit dl rm
ast.py	19234	0644	edit dl rm
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calendar.py	24832	0644	edit dl rm
cgi.py	33932	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
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codeop.py	6330	0644	edit dl rm
colorsys.py	4064	0644	edit dl rm
compileall.py	13678	0644	edit dl rm
configparser.py	54374	0644	edit dl rm
contextlib.py	24995	0644	edit dl rm
contextvars.py	129	0644	edit dl rm
copy.py	8661	0644	edit dl rm
copyreg.py	7135	0644	edit dl rm
cProfile.py	6998	0755	edit dl rm
crypt.py	3610	0644	edit dl rm
csv.py	16144	0644	edit dl rm
dataclasses.py	49973	0644	edit dl rm
datetime.py	88287	0644	edit dl rm
decimal.py	320	0644	edit dl rm
difflib.py	84058	0644	edit dl rm
dis.py	20570	0644	edit dl rm
doctest.py	104543	0644	edit dl rm
dummy_threading.py	2815	0644	edit dl rm
enum.py	38136	0644	edit dl rm
filecmp.py	9830	0644	edit dl rm
fileinput.py	14709	0644	edit dl rm
fnmatch.py	4079	0644	edit dl rm
formatter.py	15143	0644	edit dl rm
fractions.py	24329	0644	edit dl rm
ftplib.py	35129	0644	edit dl rm
functools.py	37406	0644	edit dl rm
genericpath.py	4975	0644	edit dl rm
getopt.py	7489	0644	edit dl rm
getpass.py	5994	0644	edit dl rm
gettext.py	27565	0644	edit dl rm
glob.py	5697	0644	edit dl rm
gzip.py	21413	0644	edit dl rm
hashlib.py	9730	0644	edit dl rm
heapq.py	22877	0644	edit dl rm
hmac.py	6629	0644	edit dl rm
imaplib.py	53606	0644	edit dl rm
imghdr.py	3808	0644	edit dl rm
imp.py	10536	0644	edit dl rm
inspect.py	118550	0644	edit dl rm
io.py	3541	0644	edit dl rm
ipaddress.py	76336	0644	edit dl rm
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LICENSE.txt	13925	0644	edit dl rm
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mailbox.py	78661	0644	edit dl rm
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numbers.py	10244	0644	edit dl rm
opcode.py	5808	0644	edit dl rm
operator.py	10711	0644	edit dl rm
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pathlib.py	52610	0644	edit dl rm
pdb.py	62738	0755	edit dl rm
pickle.py	64467	0644	edit dl rm
pickletools.py	93486	0644	edit dl rm
pipes.py	8916	0644	edit dl rm
pkgutil.py	21461	0644	edit dl rm
platform.py	40425	0755	edit dl rm
plistlib.py	32460	0644	edit dl rm
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profile.py	23534	0755	edit dl rm
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pydoc.py	106863	0755	edit dl rm
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queue.py	11356	0644	edit dl rm
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random.py	28802	0644	edit dl rm
re.py	15861	0644	edit dl rm
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rlcompleter.py	7097	0644	edit dl rm
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socket.py	35243	0644	edit dl rm
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__future__.py	5147	0644	edit dl rm
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Edit: /snap/core20/2866/usr/lib/python3.8/re.py (15861B)

#
# Secret Labs' Regular Expression Engine
#
# re-compatible interface for the sre matching engine
#
# Copyright (c) 1998-2001 by Secret Labs AB.  All rights reserved.
#
# This version of the SRE library can be redistributed under CNRI's
# Python 1.6 license.  For any other use, please contact Secret Labs
# AB (info@pythonware.com).
#
# Portions of this engine have been developed in cooperation with
# CNRI.  Hewlett-Packard provided funding for 1.6 integration and
# other compatibility work.
#

r"""Support for regular expressions (RE).

This module provides regular expression matching operations similar to
those found in Perl.  It supports both 8-bit and Unicode strings; both
the pattern and the strings being processed can contain null bytes and
characters outside the US ASCII range.

Regular expressions can contain both special and ordinary characters.
Most ordinary characters, like "A", "a", or "0", are the simplest
regular expressions; they simply match themselves.  You can
concatenate ordinary characters, so last matches the string 'last'.

The special characters are:
    "."      Matches any character except a newline.
    "^"      Matches the start of the string.
    "$"      Matches the end of the string or just before the newline at
             the end of the string.
    "*"      Matches 0 or more (greedy) repetitions of the preceding RE.
             Greedy means that it will match as many repetitions as possible.
    "+"      Matches 1 or more (greedy) repetitions of the preceding RE.
    "?"      Matches 0 or 1 (greedy) of the preceding RE.
    *?,+?,?? Non-greedy versions of the previous three special characters.
    {m,n}    Matches from m to n repetitions of the preceding RE.
    {m,n}?   Non-greedy version of the above.
    "\\"     Either escapes special characters or signals a special sequence.
    []       Indicates a set of characters.
             A "^" as the first character indicates a complementing set.
    "|"      A|B, creates an RE that will match either A or B.
    (...)    Matches the RE inside the parentheses.
             The contents can be retrieved or matched later in the string.
    (?aiLmsux) The letters set the corresponding flags defined below.
    (?:...)  Non-grouping version of regular parentheses.
    (?P<name>...) The substring matched by the group is accessible by name.
    (?P=name)     Matches the text matched earlier by the group named name.
    (?#...)  A comment; ignored.
    (?=...)  Matches if ... matches next, but doesn't consume the string.
    (?!...)  Matches if ... doesn't match next.
    (?<=...) Matches if preceded by ... (must be fixed length).
    (?<!...) Matches if not preceded by ... (must be fixed length).
    (?(id/name)yes|no) Matches yes pattern if the group with id/name matched,
                       the (optional) no pattern otherwise.

The special sequences consist of "\\" and a character from the list
below.  If the ordinary character is not on the list, then the
resulting RE will match the second character.
    \number  Matches the contents of the group of the same number.
    \A       Matches only at the start of the string.
    \Z       Matches only at the end of the string.
    \b       Matches the empty string, but only at the start or end of a word.
    \B       Matches the empty string, but not at the start or end of a word.
    \d       Matches any decimal digit; equivalent to the set [0-9] in
             bytes patterns or string patterns with the ASCII flag.
             In string patterns without the ASCII flag, it will match the whole
             range of Unicode digits.
    \D       Matches any non-digit character; equivalent to [^\d].
    \s       Matches any whitespace character; equivalent to [ \t\n\r\f\v] in
             bytes patterns or string patterns with the ASCII flag.
             In string patterns without the ASCII flag, it will match the whole
             range of Unicode whitespace characters.
    \S       Matches any non-whitespace character; equivalent to [^\s].
    \w       Matches any alphanumeric character; equivalent to [a-zA-Z0-9_]
             in bytes patterns or string patterns with the ASCII flag.
             In string patterns without the ASCII flag, it will match the
             range of Unicode alphanumeric characters (letters plus digits
             plus underscore).
             With LOCALE, it will match the set [0-9_] plus characters defined
             as letters for the current locale.
    \W       Matches the complement of \w.
    \\       Matches a literal backslash.

This module exports the following functions:
    match     Match a regular expression pattern to the beginning of a string.
    fullmatch Match a regular expression pattern to all of a string.
    search    Search a string for the presence of a pattern.
    sub       Substitute occurrences of a pattern found in a string.
    subn      Same as sub, but also return the number of substitutions made.
    split     Split a string by the occurrences of a pattern.
    findall   Find all occurrences of a pattern in a string.
    finditer  Return an iterator yielding a Match object for each match.
    compile   Compile a pattern into a Pattern object.
    purge     Clear the regular expression cache.
    escape    Backslash all non-alphanumerics in a string.

Each function other than purge and escape can take an optional 'flags' argument
consisting of one or more of the following module constants, joined by "|".
A, L, and U are mutually exclusive.
    A  ASCII       For string patterns, make \w, \W, \b, \B, \d, \D
                   match the corresponding ASCII character categories
                   (rather than the whole Unicode categories, which is the
                   default).
                   For bytes patterns, this flag is the only available
                   behaviour and needn't be specified.
    I  IGNORECASE  Perform case-insensitive matching.
    L  LOCALE      Make \w, \W, \b, \B, dependent on the current locale.
    M  MULTILINE   "^" matches the beginning of lines (after a newline)
                   as well as the string.
                   "$" matches the end of lines (before a newline) as well
                   as the end of the string.
    S  DOTALL      "." matches any character at all, including the newline.
    X  VERBOSE     Ignore whitespace and comments for nicer looking RE's.
    U  UNICODE     For compatibility only. Ignored for string patterns (it
                   is the default), and forbidden for bytes patterns.

This module also defines an exception 'error'.

"""

import enum
import sre_compile
import sre_parse
import functools
try:
    import _locale
except ImportError:
    _locale = None

# public symbols
__all__ = [
    "match", "fullmatch", "search", "sub", "subn", "split",
    "findall", "finditer", "compile", "purge", "template", "escape",
    "error", "Pattern", "Match", "A", "I", "L", "M", "S", "X", "U",
    "ASCII", "IGNORECASE", "LOCALE", "MULTILINE", "DOTALL", "VERBOSE",
    "UNICODE",
]

__version__ = "2.2.1"

class RegexFlag(enum.IntFlag):
    ASCII = A = sre_compile.SRE_FLAG_ASCII # assume ascii "locale"
    IGNORECASE = I = sre_compile.SRE_FLAG_IGNORECASE # ignore case
    LOCALE = L = sre_compile.SRE_FLAG_LOCALE # assume current 8-bit locale
    UNICODE = U = sre_compile.SRE_FLAG_UNICODE # assume unicode "locale"
    MULTILINE = M = sre_compile.SRE_FLAG_MULTILINE # make anchors look for newline
    DOTALL = S = sre_compile.SRE_FLAG_DOTALL # make dot match newline
    VERBOSE = X = sre_compile.SRE_FLAG_VERBOSE # ignore whitespace and comments
    # sre extensions (experimental, don't rely on these)
    TEMPLATE = T = sre_compile.SRE_FLAG_TEMPLATE # disable backtracking
    DEBUG = sre_compile.SRE_FLAG_DEBUG # dump pattern after compilation

def __repr__(self):
        if self._name_ is not None:
            return f're.{self._name_}'
        value = self._value_
        members = []
        negative = value < 0
        if negative:
            value = ~value
        for m in self.__class__:
            if value & m._value_:
                value &= ~m._value_
                members.append(f're.{m._name_}')
        if value:
            members.append(hex(value))
        res = '|'.join(members)
        if negative:
            if len(members) > 1:
                res = f'~({res})'
            else:
                res = f'~{res}'
        return res
    __str__ = object.__str__

globals().update(RegexFlag.__members__)

# sre exception
error = sre_compile.error

# --------------------------------------------------------------------
# public interface

def match(pattern, string, flags=0):
    """Try to apply the pattern at the start of the string, returning
    a Match object, or None if no match was found."""
    return _compile(pattern, flags).match(string)

def fullmatch(pattern, string, flags=0):
    """Try to apply the pattern to all of the string, returning
    a Match object, or None if no match was found."""
    return _compile(pattern, flags).fullmatch(string)

def search(pattern, string, flags=0):
    """Scan through string looking for a match to the pattern, returning
    a Match object, or None if no match was found."""
    return _compile(pattern, flags).search(string)

def sub(pattern, repl, string, count=0, flags=0):
    """Return the string obtained by replacing the leftmost
    non-overlapping occurrences of the pattern in string by the
    replacement repl.  repl can be either a string or a callable;
    if a string, backslash escapes in it are processed.  If it is
    a callable, it's passed the Match object and must return
    a replacement string to be used."""
    return _compile(pattern, flags).sub(repl, string, count)

def subn(pattern, repl, string, count=0, flags=0):
    """Return a 2-tuple containing (new_string, number).
    new_string is the string obtained by replacing the leftmost
    non-overlapping occurrences of the pattern in the source
    string by the replacement repl.  number is the number of
    substitutions that were made. repl can be either a string or a
    callable; if a string, backslash escapes in it are processed.
    If it is a callable, it's passed the Match object and must
    return a replacement string to be used."""
    return _compile(pattern, flags).subn(repl, string, count)

def split(pattern, string, maxsplit=0, flags=0):
    """Split the source string by the occurrences of the pattern,
    returning a list containing the resulting substrings.  If
    capturing parentheses are used in pattern, then the text of all
    groups in the pattern are also returned as part of the resulting
    list.  If maxsplit is nonzero, at most maxsplit splits occur,
    and the remainder of the string is returned as the final element
    of the list."""
    return _compile(pattern, flags).split(string, maxsplit)

def findall(pattern, string, flags=0):
    """Return a list of all non-overlapping matches in the string.

If one or more capturing groups are present in the pattern, return
    a list of groups; this will be a list of tuples if the pattern
    has more than one group.

Empty matches are included in the result."""
    return _compile(pattern, flags).findall(string)

def finditer(pattern, string, flags=0):
    """Return an iterator over all non-overlapping matches in the
    string.  For each match, the iterator returns a Match object.

Empty matches are included in the result."""
    return _compile(pattern, flags).finditer(string)

def compile(pattern, flags=0):
    "Compile a regular expression pattern, returning a Pattern object."
    return _compile(pattern, flags)

def purge():
    "Clear the regular expression caches"
    _cache.clear()
    _compile_repl.cache_clear()

def template(pattern, flags=0):
    "Compile a template pattern, returning a Pattern object"
    return _compile(pattern, flags|T)

# SPECIAL_CHARS
# closing ')', '}' and ']'
# '-' (a range in character set)
# '&', '~', (extended character set operations)
# '#' (comment) and WHITESPACE (ignored) in verbose mode
_special_chars_map = {i: '\\' + chr(i) for i in b'()[]{}?*+-|^$\\.&~# \t\n\r\v\f'}

def escape(pattern):
    """
    Escape special characters in a string.
    """
    if isinstance(pattern, str):
        return pattern.translate(_special_chars_map)
    else:
        pattern = str(pattern, 'latin1')
        return pattern.translate(_special_chars_map).encode('latin1')

Pattern = type(sre_compile.compile('', 0))
Match = type(sre_compile.compile('', 0).match(''))

# --------------------------------------------------------------------
# internals

_cache = {}  # ordered!

_MAXCACHE = 512
def _compile(pattern, flags):
    # internal: compile pattern
    if isinstance(flags, RegexFlag):
        flags = flags.value
    try:
        return _cache[type(pattern), pattern, flags]
    except KeyError:
        pass
    if isinstance(pattern, Pattern):
        if flags:
            raise ValueError(
                "cannot process flags argument with a compiled pattern")
        return pattern
    if not sre_compile.isstring(pattern):
        raise TypeError("first argument must be string or compiled pattern")
    p = sre_compile.compile(pattern, flags)
    if not (flags & DEBUG):
        if len(_cache) >= _MAXCACHE:
            # Drop the oldest item
            try:
                del _cache[next(iter(_cache))]
            except (StopIteration, RuntimeError, KeyError):
                pass
        _cache[type(pattern), pattern, flags] = p
    return p

@functools.lru_cache(_MAXCACHE)
def _compile_repl(repl, pattern):
    # internal: compile replacement pattern
    return sre_parse.parse_template(repl, pattern)

def _expand(pattern, match, template):
    # internal: Match.expand implementation hook
    template = sre_parse.parse_template(template, pattern)
    return sre_parse.expand_template(template, match)

def _subx(pattern, template):
    # internal: Pattern.sub/subn implementation helper
    template = _compile_repl(template, pattern)
    if not template[0] and len(template[1]) == 1:
        # literal replacement
        return template[1][0]
    def filter(match, template=template):
        return sre_parse.expand_template(template, match)
    return filter

# register myself for pickling

import copyreg

def _pickle(p):
    return _compile, (p.pattern, p.flags)

copyreg.pickle(Pattern, _pickle, _compile)

# --------------------------------------------------------------------
# experimental stuff (see python-dev discussions for details)

class Scanner:
    def __init__(self, lexicon, flags=0):
        from sre_constants import BRANCH, SUBPATTERN
        if isinstance(flags, RegexFlag):
            flags = flags.value
        self.lexicon = lexicon
        # combine phrases into a compound pattern
        p = []
        s = sre_parse.State()
        s.flags = flags
        for phrase, action in lexicon:
            gid = s.opengroup()
            p.append(sre_parse.SubPattern(s, [
                (SUBPATTERN, (gid, 0, 0, sre_parse.parse(phrase, flags))),
                ]))
            s.closegroup(gid, p[-1])
        p = sre_parse.SubPattern(s, [(BRANCH, (None, p))])
        self.scanner = sre_compile.compile(p)
    def scan(self, string):
        result = []
        append = result.append
        match = self.scanner.scanner(string).match
        i = 0
        while True:
            m = match()
            if not m:
                break
            j = m.end()
            if i == j:
                break
            action = self.lexicon[m.lastindex-1][1]
            if callable(action):
                self.match = m
                action = action(self, m.group())
            if action is not None:
                append(action)
            i = j
        return result, string[i:]

cmd: