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Name	Size	Permission	Date
__pycache__	[ DIR ]	drwxr-xr-x	2025-08-05 17:02
__init__.py	3.23 KB	-rw-r--r--	2024-02-29 21:44
__init__.pyi	16.58 KB	-rw-r--r--	2024-02-29 21:44
_cmp.py	3.93 KB	-rw-r--r--	2024-02-29 21:44
_cmp.pyi	399 B	-rw-r--r--	2024-02-29 21:44
_compat.py	2.48 KB	-rw-r--r--	2024-02-29 21:44
_config.py	843 B	-rw-r--r--	2024-02-29 21:44
_funcs.py	16.77 KB	-rw-r--r--	2024-02-29 21:44
_make.py	99.53 KB	-rw-r--r--	2024-02-29 21:44
_next_gen.py	6.06 KB	-rw-r--r--	2024-02-29 21:44
_typing_compat.pyi	469 B	-rw-r--r--	2024-02-29 21:44
_version_info.py	2.07 KB	-rw-r--r--	2024-02-29 21:44
_version_info.pyi	209 B	-rw-r--r--	2024-02-29 21:44
converters.py	3.54 KB	-rw-r--r--	2024-02-29 21:44
converters.pyi	406 B	-rw-r--r--	2024-02-29 21:44
exceptions.py	1.93 KB	-rw-r--r--	2024-02-29 21:44
exceptions.pyi	539 B	-rw-r--r--	2024-02-29 21:44
filters.py	1.44 KB	-rw-r--r--	2024-02-29 21:44
filters.pyi	225 B	-rw-r--r--	2024-02-29 21:44
py.typed	0 B	-rw-r--r--	2024-02-29 21:44
setters.py	1.37 KB	-rw-r--r--	2024-02-29 21:44
setters.pyi	567 B	-rw-r--r--	2024-02-29 21:44
validators.py	19.21 KB	-rw-r--r--	2024-02-29 21:44
validators.pyi	2.52 KB	-rw-r--r--	2024-02-29 21:44

Rename

# SPDX-License-Identifier: MIT

import inspect
import platform
import sys
import threading

from collections.abc import Mapping, Sequence  # noqa: F401
from typing import _GenericAlias

PYPY = platform.python_implementation() == "PyPy"
PY_3_8_PLUS = sys.version_info[:2] >= (3, 8)
PY_3_9_PLUS = sys.version_info[:2] >= (3, 9)
PY310 = sys.version_info[:2] >= (3, 10)
PY_3_12_PLUS = sys.version_info[:2] >= (3, 12)

if sys.version_info < (3, 8):
    try:
        from typing_extensions import Protocol
    except ImportError:  # pragma: no cover
        Protocol = object
else:
    from typing import Protocol  # noqa: F401

class _AnnotationExtractor:
    """
    Extract type annotations from a callable, returning None whenever there
    is none.
    """

__slots__ = ["sig"]

def __init__(self, callable):
        try:
            self.sig = inspect.signature(callable)
        except (ValueError, TypeError):  # inspect failed
            self.sig = None

def get_first_param_type(self):
        """
        Return the type annotation of the first argument if it's not empty.
        """
        if not self.sig:
            return None

params = list(self.sig.parameters.values())
        if params and params[0].annotation is not inspect.Parameter.empty:
            return params[0].annotation

return None

def get_return_type(self):
        """
        Return the return type if it's not empty.
        """
        if (
            self.sig
            and self.sig.return_annotation is not inspect.Signature.empty
        ):
            return self.sig.return_annotation

return None

# Thread-local global to track attrs instances which are already being repr'd.
# This is needed because there is no other (thread-safe) way to pass info
# about the instances that are already being repr'd through the call stack
# in order to ensure we don't perform infinite recursion.
#
# For instance, if an instance contains a dict which contains that instance,
# we need to know that we're already repr'ing the outside instance from within
# the dict's repr() call.
#
# This lives here rather than in _make.py so that the functions in _make.py
# don't have a direct reference to the thread-local in their globals dict.
# If they have such a reference, it breaks cloudpickle.
repr_context = threading.local()

def get_generic_base(cl):
    """If this is a generic class (A[str]), return the generic base for it."""
    if cl.__class__ is _GenericAlias:
        return cl.__origin__
    return None