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# __ | |
# /__) _ _ _ _ _/ _ | |
# / ( (- (/ (/ (- _) / _) | |
# / | |
""" | |
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 warnings | |
import urllib3 | |
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 | |
assert major >= 1 | |
if major == 1: | |
assert minor >= 21 | |
# 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, < 6.0.0 | |
assert (3, 0, 2) <= (major, minor, patch) < (6, 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 < 4.0.0 | |
assert (2, 0, 0) <= (major, minor, patch) < (4, 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) | |
# Set default logging handler to avoid "No handler found" warnings. | |
import logging | |
from logging import NullHandler | |
from . import packages, utils | |
from .__version__ import ( | |
__author__, | |
__author_email__, | |
__build__, | |
__cake__, | |
__copyright__, | |
__description__, | |
__license__, | |
__title__, | |
__url__, | |
__version__, | |
) | |
from .api import delete, get, head, options, patch, post, put, request | |
from .exceptions import ( | |
ConnectionError, | |
ConnectTimeout, | |
FileModeWarning, | |
HTTPError, | |
JSONDecodeError, | |
ReadTimeout, | |
RequestException, | |
Timeout, | |
TooManyRedirects, | |
URLRequired, | |
) | |
from .models import PreparedRequest, Request, Response | |
from .sessions import Session, session | |
from .status_codes import codes | |
logging.getLogger(__name__).addHandler(NullHandler()) | |
# FileModeWarnings go off per the default. | |
warnings.simplefilter("default", FileModeWarning, append=True) | |