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43 lines
1.1 KiB
Python
43 lines
1.1 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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requests._internal_utils
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~~~~~~~~~~~~~~
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Provides utility functions that are consumed internally by Requests
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which depend on extremely few external helpers (such as compat)
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"""
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from .compat import is_py2, builtin_str, str
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def to_native_string(string, encoding='ascii'):
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"""Given a string object, regardless of type, returns a representation of
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that string in the native string type, encoding and decoding where
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necessary. This assumes ASCII unless told otherwise.
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"""
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if isinstance(string, builtin_str):
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out = string
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else:
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if is_py2:
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out = string.encode(encoding)
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else:
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out = string.decode(encoding)
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return out
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def unicode_is_ascii(u_string):
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"""Determine if unicode string only contains ASCII characters.
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:param str u_string: unicode string to check. Must be unicode
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and not Python 2 `str`.
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:rtype: bool
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"""
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assert isinstance(u_string, str)
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try:
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u_string.encode('ascii')
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return True
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except UnicodeEncodeError:
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return False
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