138 lines
4.0 KiB
Python
138 lines
4.0 KiB
Python
# -*- coding: utf-8 -*-
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# __
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# /__) _ _ _ _ _/ _
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# / ( (- (/ (/ (- _) / _)
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# /
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"""
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Requests HTTP Library
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~~~~~~~~~~~~~~~~~~~~~
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Requests is an HTTP library, written in Python, for human beings.
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Basic GET usage:
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>>> import requests
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>>> r = requests.get('https://www.python.org')
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>>> r.status_code
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200
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>>> b'Python is a programming language' in r.content
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True
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... or POST:
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>>> payload = dict(key1='value1', key2='value2')
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>>> r = requests.post('https://httpbin.org/post', data=payload)
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>>> print(r.text)
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{
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...
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"form": {
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"key1": "value1",
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"key2": "value2"
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},
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...
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}
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The other HTTP methods are supported - see `requests.api`. Full documentation
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is at <https://requests.readthedocs.io>.
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:copyright: (c) 2017 by Kenneth Reitz.
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:license: Apache 2.0, see LICENSE for more details.
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"""
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import urllib3
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import chardet
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import warnings
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from .exceptions import RequestsDependencyWarning
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def check_compatibility(urllib3_version, chardet_version):
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urllib3_version = urllib3_version.split('.')
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assert urllib3_version != ['dev'] # Verify urllib3 isn't installed from git.
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# Sometimes, urllib3 only reports its version as 16.1.
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if len(urllib3_version) == 2:
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urllib3_version.append('0')
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# Check urllib3 for compatibility.
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major, minor, patch = urllib3_version # noqa: F811
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major, minor, patch = int(major), int(minor), int(patch)
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# urllib3 >= 1.21.1, <= 1.26
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assert major == 1
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assert minor >= 21
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assert minor <= 26
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# Check chardet for compatibility.
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major, minor, patch = chardet_version.split('.')[:3]
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major, minor, patch = int(major), int(minor), int(patch)
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# chardet >= 3.0.2, < 5.0.0
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assert (3, 0, 2) <= (major, minor, patch) < (5, 0, 0)
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def _check_cryptography(cryptography_version):
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# cryptography < 1.3.4
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try:
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cryptography_version = list(map(int, cryptography_version.split('.')))
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except ValueError:
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return
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if cryptography_version < [1, 3, 4]:
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warning = 'Old version of cryptography ({}) may cause slowdown.'.format(cryptography_version)
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warnings.warn(warning, RequestsDependencyWarning)
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# Check imported dependencies for compatibility.
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try:
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check_compatibility(urllib3.__version__, chardet.__version__)
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except (AssertionError, ValueError):
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warnings.warn("urllib3 ({}) or chardet ({}) doesn't match a supported "
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"version!".format(urllib3.__version__, chardet.__version__),
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RequestsDependencyWarning)
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# Attempt to enable urllib3's fallback for SNI support
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# if the standard library doesn't support SNI or the
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# 'ssl' library isn't available.
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try:
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try:
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import ssl
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except ImportError:
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ssl = None
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if not getattr(ssl, "HAS_SNI", False):
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from urllib3.contrib import pyopenssl
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pyopenssl.inject_into_urllib3()
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# Check cryptography version
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from cryptography import __version__ as cryptography_version
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_check_cryptography(cryptography_version)
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except ImportError:
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pass
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# urllib3's DependencyWarnings should be silenced.
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from urllib3.exceptions import DependencyWarning
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warnings.simplefilter('ignore', DependencyWarning)
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from .__version__ import __title__, __description__, __url__, __version__
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from .__version__ import __build__, __author__, __author_email__, __license__
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from .__version__ import __copyright__, __cake__
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from . import utils
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from . import packages
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from .models import Request, Response, PreparedRequest
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from .api import request, get, head, post, patch, put, delete, options
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from .sessions import session, Session
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from .status_codes import codes
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from .exceptions import (
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RequestException, Timeout, URLRequired,
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TooManyRedirects, HTTPError, ConnectionError,
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FileModeWarning, ConnectTimeout, ReadTimeout
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)
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# Set default logging handler to avoid "No handler found" warnings.
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import logging
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from logging import NullHandler
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logging.getLogger(__name__).addHandler(NullHandler())
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# FileModeWarnings go off per the default.
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warnings.simplefilter('default', FileModeWarning, append=True)
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