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__init__.py	file	4,857 B	0644	2025-06-12 01:19:32	edit
__version__.py	file	435 B	0644	2023-05-22 15:10:32	edit
_internal_utils.py	file	1,495 B	0644	2023-05-22 15:10:32	edit
adapters.py	file	19,553 B	0644	2023-05-22 15:10:32	edit
api.py	file	6,449 B	0644	2023-05-22 15:10:32	edit
auth.py	file	10,187 B	0644	2023-05-22 15:10:32	edit
certs.py	file	429 B	0644	2023-05-22 15:10:32	edit
compat.py	file	1,380 B	0644	2025-06-12 01:19:32	edit
cookies.py	file	18,560 B	0644	2023-05-22 15:10:32	edit
exceptions.py	file	3,811 B	0644	2023-05-22 15:10:32	edit
help.py	file	3,806 B	0644	2025-06-12 01:19:32	edit
hooks.py	file	733 B	0644	2023-05-22 15:10:32	edit
models.py	file	35,223 B	0644	2023-05-22 15:10:32	edit
packages.py	file	777 B	0644	2025-06-12 01:19:32	edit
sessions.py	file	30,373 B	0644	2023-05-22 15:10:32	edit
status_codes.py	file	4,235 B	0644	2023-05-22 15:10:32	edit
structures.py	file	2,912 B	0644	2023-05-22 15:10:32	edit
utils.py	file	33,177 B	0644	2025-06-12 01:19:32	edit

editing: _internal_utils.py

"""
requests._internal_utils
~~~~~~~~~~~~~~

Provides utility functions that are consumed internally by Requests
which depend on extremely few external helpers (such as compat)
"""
import re

from .compat import builtin_str

_VALID_HEADER_NAME_RE_BYTE = re.compile(rb"^[^:\s][^:\r\n]*$")
_VALID_HEADER_NAME_RE_STR = re.compile(r"^[^:\s][^:\r\n]*$")
_VALID_HEADER_VALUE_RE_BYTE = re.compile(rb"^\S[^\r\n]*$|^$")
_VALID_HEADER_VALUE_RE_STR = re.compile(r"^\S[^\r\n]*$|^$")

_HEADER_VALIDATORS_STR = (_VALID_HEADER_NAME_RE_STR, _VALID_HEADER_VALUE_RE_STR)
_HEADER_VALIDATORS_BYTE = (_VALID_HEADER_NAME_RE_BYTE, _VALID_HEADER_VALUE_RE_BYTE)
HEADER_VALIDATORS = {
    bytes: _HEADER_VALIDATORS_BYTE,
    str: _HEADER_VALIDATORS_STR,
}

def to_native_string(string, encoding="ascii"):
    """Given a string object, regardless of type, returns a representation of
    that string in the native string type, encoding and decoding where
    necessary. This assumes ASCII unless told otherwise.
    """
    if isinstance(string, builtin_str):
        out = string
    else:
        out = string.decode(encoding)

return out

def unicode_is_ascii(u_string):
    """Determine if unicode string only contains ASCII characters.

:param str u_string: unicode string to check. Must be unicode
        and not Python 2 `str`.
    :rtype: bool
    """
    assert isinstance(u_string, str)
    try:
        u_string.encode("ascii")
        return True
    except UnicodeEncodeError:
        return False

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