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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
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asyncio	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
collections	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
concurrent	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
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email	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
encodings	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
ensurepip	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
html	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
http	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
idlelib	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
importlib	[ DIR ]	drwxr-xr-x	2026-05-05 23:06
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__future__.py	5.1 KB	-rw-r--r--	2026-03-26 17:23
__hello__.py	227 B	-rw-r--r--	2026-03-26 17:23
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configparser.py	52.57 KB	-rw-r--r--	2026-03-26 17:22
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csv.py	18.73 KB	-rw-r--r--	2026-03-26 17:22
dataclasses.py	63.03 KB	-rw-r--r--	2026-03-26 17:22
datetime.py	268 B	-rw-r--r--	2026-03-26 17:23
decimal.py	2.73 KB	-rw-r--r--	2026-03-26 17:22
difflib.py	81.41 KB	-rw-r--r--	2026-03-26 17:22
dis.py	40 KB	-rw-r--r--	2026-03-26 17:22
doctest.py	106.85 KB	-rw-r--r--	2026-03-26 17:22
enum.py	83.61 KB	-rw-r--r--	2026-03-26 17:22
filecmp.py	10.4 KB	-rw-r--r--	2026-03-26 17:22
fileinput.py	15.35 KB	-rw-r--r--	2026-03-26 17:22
fnmatch.py	6.04 KB	-rw-r--r--	2026-03-26 17:22
fractions.py	39.15 KB	-rw-r--r--	2026-03-26 17:22
ftplib.py	33.92 KB	-rw-r--r--	2026-03-26 17:22
functools.py	38.15 KB	-rw-r--r--	2026-03-26 17:23
genericpath.py	6.1 KB	-rw-r--r--	2026-03-26 17:23
getopt.py	7.31 KB	-rw-r--r--	2026-03-26 17:22
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gettext.py	21.03 KB	-rw-r--r--	2026-03-26 17:22
glob.py	19.44 KB	-rw-r--r--	2026-03-26 17:22
graphlib.py	9.42 KB	-rw-r--r--	2026-03-26 17:22
gzip.py	24.06 KB	-rw-r--r--	2026-03-26 17:22
hashlib.py	9.22 KB	-rw-r--r--	2026-03-26 17:22
heapq.py	22.48 KB	-rw-r--r--	2026-03-26 17:22
hmac.py	7.58 KB	-rw-r--r--	2026-03-26 17:22
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mailbox.py	79.62 KB	-rw-r--r--	2026-03-26 17:22
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ntpath.py	30.16 KB	-rw-r--r--	2026-03-26 17:22
nturl2path.py	2.32 KB	-rw-r--r--	2026-03-26 17:22
numbers.py	11.49 KB	-rw-r--r--	2026-03-26 17:22
opcode.py	2.76 KB	-rw-r--r--	2026-03-26 17:23
operator.py	10.72 KB	-rw-r--r--	2026-03-26 17:22
optparse.py	58.95 KB	-rw-r--r--	2026-03-26 17:22
os.py	40.65 KB	-rw-r--r--	2026-03-26 17:22
pdb.py	90.37 KB	-rwxr-xr-x	2026-03-26 17:22
pickle.py	65.39 KB	-rw-r--r--	2026-03-26 17:22
pickletools.py	91.85 KB	-rw-r--r--	2026-03-26 17:22
pkgutil.py	17.85 KB	-rw-r--r--	2026-03-26 17:22
platform.py	46.25 KB	-rwxr-xr-x	2026-03-26 17:22
plistlib.py	29.32 KB	-rw-r--r--	2026-03-26 17:22
poplib.py	14.26 KB	-rw-r--r--	2026-03-26 17:22
posixpath.py	17.81 KB	-rw-r--r--	2026-03-26 17:22
pprint.py	23.59 KB	-rw-r--r--	2026-03-26 17:22
profile.py	22.61 KB	-rwxr-xr-x	2026-03-26 17:22
pstats.py	28.61 KB	-rw-r--r--	2026-03-26 17:22
pty.py	5.99 KB	-rw-r--r--	2026-03-26 17:22
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pydoc.py	107.91 KB	-rwxr-xr-x	2026-03-26 17:22
queue.py	13.14 KB	-rw-r--r--	2026-03-26 17:22
quopri.py	7.03 KB	-rwxr-xr-x	2026-03-26 17:22
random.py	36.14 KB	-rw-r--r--	2026-03-26 17:22
reprlib.py	7.88 KB	-rw-r--r--	2026-03-26 17:22
rlcompleter.py	7.73 KB	-rw-r--r--	2026-03-26 17:23
runpy.py	12.58 KB	-rw-r--r--	2026-03-26 17:22
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selectors.py	19 KB	-rw-r--r--	2026-03-26 17:22
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shutil.py	56.12 KB	-rw-r--r--	2026-03-26 17:22
signal.py	2.44 KB	-rw-r--r--	2026-03-26 17:22
site.py	24.96 KB	-rw-r--r--	2026-03-26 17:22
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socket.py	36.87 KB	-rw-r--r--	2026-03-26 17:22
socketserver.py	27.41 KB	-rw-r--r--	2026-03-26 17:23
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sre_constants.py	232 B	-rw-r--r--	2026-03-26 17:22
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stat.py	6.16 KB	-rw-r--r--	2026-03-26 17:22
statistics.py	60.72 KB	-rw-r--r--	2026-03-26 17:22
string.py	11.51 KB	-rw-r--r--	2026-03-26 17:22
stringprep.py	12.61 KB	-rw-r--r--	2026-03-26 17:22
struct.py	257 B	-rw-r--r--	2026-03-26 17:22
subprocess.py	88.7 KB	-rw-r--r--	2026-03-26 17:22
symtable.py	13.87 KB	-rw-r--r--	2026-03-26 17:22
tabnanny.py	11.27 KB	-rwxr-xr-x	2026-03-26 17:22
tarfile.py	111.74 KB	-rwxr-xr-x	2026-03-26 17:22
tempfile.py	31.65 KB	-rw-r--r--	2026-03-26 17:22
textwrap.py	19.49 KB	-rw-r--r--	2026-03-26 17:22
this.py	1003 B	-rw-r--r--	2026-03-26 17:22
threading.py	54.05 KB	-rw-r--r--	2026-03-26 17:22
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zipimport.py	32.12 KB	-rw-r--r--	2026-03-26 17:22

Rename

"""Helper to provide extensibility for pickle.

This is only useful to add pickle support for extension types defined in
C, not for instances of user-defined classes.
"""

__all__ = ["pickle", "constructor",
           "add_extension", "remove_extension", "clear_extension_cache"]

dispatch_table = {}

def pickle(ob_type, pickle_function, constructor_ob=None):
    if not callable(pickle_function):
        raise TypeError("reduction functions must be callable")
    dispatch_table[ob_type] = pickle_function

# The constructor_ob function is a vestige of safe for unpickling.
    # There is no reason for the caller to pass it anymore.
    if constructor_ob is not None:
        constructor(constructor_ob)

def constructor(object):
    if not callable(object):
        raise TypeError("constructors must be callable")

# Example: provide pickling support for complex numbers.

def pickle_complex(c):
    return complex, (c.real, c.imag)

pickle(complex, pickle_complex, complex)

def pickle_union(obj):
    import functools, operator
    return functools.reduce, (operator.or_, obj.__args__)

pickle(type(int | str), pickle_union)

# Support for pickling new-style objects

def _reconstructor(cls, base, state):
    if base is object:
        obj = object.__new__(cls)
    else:
        obj = base.__new__(cls, state)
        if base.__init__ != object.__init__:
            base.__init__(obj, state)
    return obj

_HEAPTYPE = 1<<9
_new_type = type(int.__new__)

# Python code for object.__reduce_ex__ for protocols 0 and 1

def _reduce_ex(self, proto):
    assert proto < 2
    cls = self.__class__
    for base in cls.__mro__:
        if hasattr(base, '__flags__') and not base.__flags__ & _HEAPTYPE:
            break
        new = base.__new__
        if isinstance(new, _new_type) and new.__self__ is base:
            break
    else:
        base = object # not really reachable
    if base is object:
        state = None
    else:
        if base is cls:
            raise TypeError(f"cannot pickle {cls.__name__!r} object")
        state = base(self)
    args = (cls, base, state)
    try:
        getstate = self.__getstate__
    except AttributeError:
        if getattr(self, "__slots__", None):
            raise TypeError(f"cannot pickle {cls.__name__!r} object: "
                            f"a class that defines __slots__ without "
                            f"defining __getstate__ cannot be pickled "
                            f"with protocol {proto}") from None
        try:
            dict = self.__dict__
        except AttributeError:
            dict = None
    else:
        if (type(self).__getstate__ is object.__getstate__ and
            getattr(self, "__slots__", None)):
            raise TypeError("a class that defines __slots__ without "
                            "defining __getstate__ cannot be pickled")
        dict = getstate()
    if dict:
        return _reconstructor, args, dict
    else:
        return _reconstructor, args

# Helper for __reduce_ex__ protocol 2

def __newobj__(cls, *args):
    return cls.__new__(cls, *args)

def __newobj_ex__(cls, args, kwargs):
    """Used by pickle protocol 4, instead of __newobj__ to allow classes with
    keyword-only arguments to be pickled correctly.
    """
    return cls.__new__(cls, *args, **kwargs)

def _slotnames(cls):
    """Return a list of slot names for a given class.

This needs to find slots defined by the class and its bases, so we
    can't simply return the __slots__ attribute.  We must walk down
    the Method Resolution Order and concatenate the __slots__ of each
    class found there.  (This assumes classes don't modify their
    __slots__ attribute to misrepresent their slots after the class is
    defined.)
    """

# Get the value from a cache in the class if possible
    names = cls.__dict__.get("__slotnames__")
    if names is not None:
        return names

# Not cached -- calculate the value
    names = []
    if not hasattr(cls, "__slots__"):
        # This class has no slots
        pass
    else:
        # Slots found -- gather slot names from all base classes
        for c in cls.__mro__:
            if "__slots__" in c.__dict__:
                slots = c.__dict__['__slots__']
                # if class has a single slot, it can be given as a string
                if isinstance(slots, str):
                    slots = (slots,)
                for name in slots:
                    # special descriptors
                    if name in ("__dict__", "__weakref__"):
                        continue
                    # mangled names
                    elif name.startswith('__') and not name.endswith('__'):
                        stripped = c.__name__.lstrip('_')
                        if stripped:
                            names.append('_%s%s' % (stripped, name))
                        else:
                            names.append(name)
                    else:
                        names.append(name)

# Cache the outcome in the class if at all possible
    try:
        cls.__slotnames__ = names
    except:
        pass # But don't die if we can't

return names

# A registry of extension codes.  This is an ad-hoc compression
# mechanism.  Whenever a global reference to <module>, <name> is about
# to be pickled, the (<module>, <name>) tuple is looked up here to see
# if it is a registered extension code for it.  Extension codes are
# universal, so that the meaning of a pickle does not depend on
# context.  (There are also some codes reserved for local use that
# don't have this restriction.)  Codes are positive ints; 0 is
# reserved.

_extension_registry = {}                # key -> code
_inverted_registry = {}                 # code -> key
_extension_cache = {}                   # code -> object
# Don't ever rebind those names:  pickling grabs a reference to them when
# it's initialized, and won't see a rebinding.

def add_extension(module, name, code):
    """Register an extension code."""
    code = int(code)
    if not 1 <= code <= 0x7fffffff:
        raise ValueError("code out of range")
    key = (module, name)
    if (_extension_registry.get(key) == code and
        _inverted_registry.get(code) == key):
        return # Redundant registrations are benign
    if key in _extension_registry:
        raise ValueError("key %s is already registered with code %s" %
                         (key, _extension_registry[key]))
    if code in _inverted_registry:
        raise ValueError("code %s is already in use for key %s" %
                         (code, _inverted_registry[code]))
    _extension_registry[key] = code
    _inverted_registry[code] = key

def remove_extension(module, name, code):
    """Unregister an extension code.  For testing only."""
    key = (module, name)
    if (_extension_registry.get(key) != code or
        _inverted_registry.get(code) != key):
        raise ValueError("key %s is not registered with code %s" %
                         (key, code))
    del _extension_registry[key]
    del _inverted_registry[code]
    if code in _extension_cache:
        del _extension_cache[code]

def clear_extension_cache():
    _extension_cache.clear()

# Standard extension code assignments

# Reserved ranges

# First  Last Count  Purpose
#     1   127   127  Reserved for Python standard library
#   128   191    64  Reserved for Zope
#   192   239    48  Reserved for 3rd parties
#   240   255    16  Reserved for private use (will never be assigned)
#   256   Inf   Inf  Reserved for future assignment

# Extension codes are assigned by the Python Software Foundation.