| # -*- coding: utf-8 -*- |
| |
| """ |
| requests._internal_utils |
| ~~~~~~~~~~~~~~ |
| |
| Provides utility functions that are consumed internally by Requests |
| which depend on extremely few external helpers (such as compat) |
| """ |
| |
| from .compat import is_py2, builtin_str, 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: |
| if is_py2: |
| out = string.encode(encoding) |
| 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 |
