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# -*- coding: utf-8 -*- # __ # /__) _ _ _ _ _/ _ # / ( (- (/ (/ (- _) / _) # / """ Requests HTTP Library ~~~~~~~~~~~~~~~~~~~~~ Requests is an HTTP library, written in Python, for human beings. Basic GET usage: >>> import requests >>> r = requests.get('https://www.python.org') >>> r.status_code 200 >>> b'Python is a programming language' in r.content True ... or POST: >>> payload = dict(key1='value1', key2='value2') >>> r = requests.post('https://httpbin.org/post', data=payload) >>> print(r.text) { ... "form": { "key1": "value1", "key2": "value2" }, ... } The other HTTP methods are supported - see `requests.api`. Full documentation is at <https://requests.readthedocs.io>. :copyright: (c) 2017 by Kenneth Reitz. :license: Apache 2.0, see LICENSE for more details. """ import urllib3 import warnings from .exceptions import RequestsDependencyWarning try: from charset_normalizer import __version__ as charset_normalizer_version except ImportError: charset_normalizer_version = None try: from chardet import __version__ as chardet_version except ImportError: chardet_version = None def check_compatibility(urllib3_version, chardet_version, charset_normalizer_version): urllib3_version = urllib3_version.split('.') assert urllib3_version != ['dev'] # Verify urllib3 isn't installed from git. # Sometimes, urllib3 only reports its version as 16.1. if len(urllib3_version) == 2: urllib3_version.append('0') # Check urllib3 for compatibility. major, minor, patch = urllib3_version # noqa: F811 major, minor, patch = int(major), int(minor), int(patch) # urllib3 >= 1.21.1, <= 1.26 assert major == 1 assert minor >= 21 assert minor <= 26 # Check charset_normalizer for compatibility. if chardet_version: major, minor, patch = chardet_version.split('.')[:3] major, minor, patch = int(major), int(minor), int(patch) # chardet_version >= 3.0.2, < 5.0.0 assert (3, 0, 2) <= (major, minor, patch) < (5, 0, 0) elif charset_normalizer_version: major, minor, patch = charset_normalizer_version.split('.')[:3] major, minor, patch = int(major), int(minor), int(patch) # charset_normalizer >= 2.0.0 < 3.0.0 assert (2, 0, 0) <= (major, minor, patch) < (3, 0, 0) else: raise Exception("You need either charset_normalizer or chardet installed") def _check_cryptography(cryptography_version): # cryptography < 1.3.4 try: cryptography_version = list(map(int, cryptography_version.split('.'))) except ValueError: return if cryptography_version < [1, 3, 4]: warning = 'Old version of cryptography ({}) may cause slowdown.'.format(cryptography_version) warnings.warn(warning, RequestsDependencyWarning) # Check imported dependencies for compatibility. try: check_compatibility(urllib3.__version__, chardet_version, charset_normalizer_version) except (AssertionError, ValueError): warnings.warn("urllib3 ({}) or chardet ({})/charset_normalizer ({}) doesn't match a supported " "version!".format(urllib3.__version__, chardet_version, charset_normalizer_version), RequestsDependencyWarning) # Attempt to enable urllib3's fallback for SNI support # if the standard library doesn't support SNI or the # 'ssl' library isn't available. try: try: import ssl except ImportError: ssl = None if not getattr(ssl, "HAS_SNI", False): from urllib3.contrib import pyopenssl pyopenssl.inject_into_urllib3() # Check cryptography version from cryptography import __version__ as cryptography_version _check_cryptography(cryptography_version) except ImportError: pass # urllib3's DependencyWarnings should be silenced. from urllib3.exceptions import DependencyWarning warnings.simplefilter('ignore', DependencyWarning) from .__version__ import __title__, __description__, __url__, __version__ from .__version__ import __build__, __author__, __author_email__, __license__ from .__version__ import __copyright__, __cake__ from . import utils from . import packages from .models import Request, Response, PreparedRequest from .api import request, get, head, post, patch, put, delete, options from .sessions import session, Session from .status_codes import codes from .exceptions import ( RequestException, Timeout, URLRequired, TooManyRedirects, HTTPError, ConnectionError, FileModeWarning, ConnectTimeout, ReadTimeout ) # Set default logging handler to avoid "No handler found" warnings. import logging from logging import NullHandler logging.getLogger(__name__).addHandler(NullHandler()) # FileModeWarnings go off per the default. warnings.simplefilter('default', FileModeWarning, append=True)