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# -*- coding: utf-8 -*-
# __
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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 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)