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utils
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__init__.py
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__pycache__
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deprecated.py
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dump.py
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formdata.py
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user_agent.py
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Editing: user_agent.py
# -*- coding: utf-8 -*- import collections import platform import sys def user_agent(name, version, extras=None): """Return an internet-friendly user_agent string. The majority of this code has been wilfully stolen from the equivalent function in Requests. :param name: The intended name of the user-agent, e.g. "python-requests". :param version: The version of the user-agent, e.g. "0.0.1". :param extras: List of two-item tuples that are added to the user-agent string. :returns: Formatted user-agent string :rtype: str """ if extras is None: extras = [] return UserAgentBuilder( name, version ).include_extras( extras ).include_implementation( ).include_system().build() class UserAgentBuilder(object): """Class to provide a greater level of control than :func:`user_agent`. This is used by :func:`user_agent` to build its User-Agent string. .. code-block:: python user_agent_str = UserAgentBuilder( name='requests-toolbelt', version='17.4.0', ).include_implementation( ).include_system( ).include_extras([ ('requests', '2.14.2'), ('urllib3', '1.21.2'), ]).build() """ format_string = '%s/%s' def __init__(self, name, version): """Initialize our builder with the name and version of our user agent. :param str name: Name of our user-agent. :param str version: The version string for user-agent. """ self._pieces = collections.deque([(name, version)]) def build(self): """Finalize the User-Agent string. :returns: Formatted User-Agent string. :rtype: str """ return " ".join([self.format_string % piece for piece in self._pieces]) def include_extras(self, extras): """Include extra portions of the User-Agent. :param list extras: list of tuples of extra-name and extra-version """ if any(len(extra) != 2 for extra in extras): raise ValueError('Extras should be a sequence of two item tuples.') self._pieces.extend(extras) return self def include_implementation(self): """Append the implementation string to the user-agent string. This adds the the information that you're using CPython 2.7.13 to the User-Agent. """ self._pieces.append(_implementation_tuple()) return self def include_system(self): """Append the information about the Operating System.""" self._pieces.append(_platform_tuple()) return self def _implementation_tuple(): """Return the tuple of interpreter name and version. Returns a string that provides both the name and the version of the Python implementation currently running. For example, on CPython 2.7.5 it will return "CPython/2.7.5". This function works best on CPython and PyPy: in particular, it probably doesn't work for Jython or IronPython. Future investigation should be done to work out the correct shape of the code for those platforms. """ implementation = platform.python_implementation() if implementation == 'CPython': implementation_version = platform.python_version() elif implementation == 'PyPy': implementation_version = '%s.%s.%s' % (sys.pypy_version_info.major, sys.pypy_version_info.minor, sys.pypy_version_info.micro) if sys.pypy_version_info.releaselevel != 'final': implementation_version = ''.join([ implementation_version, sys.pypy_version_info.releaselevel ]) elif implementation == 'Jython': implementation_version = platform.python_version() # Complete Guess elif implementation == 'IronPython': implementation_version = platform.python_version() # Complete Guess else: implementation_version = 'Unknown' return (implementation, implementation_version) def _implementation_string(): return "%s/%s" % _implementation_tuple() def _platform_tuple(): try: p_system = platform.system() p_release = platform.release() except IOError: p_system = 'Unknown' p_release = 'Unknown' return (p_system, p_release)
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