try:
# Note: This logic prevents upgrading cryptography on Windows, if imported
# as part of pip.
from pip._internal.utils.compat import WINDOWS
if not WINDOWS:
raise ImportError("pip internals: don't import cryptography on Windows")
try:
import ssl
except ImportError:
ssl = None
if not getattr(ssl, "HAS_SNI", False):
from pip._vendor.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 pip._vendor.urllib3.exceptions import DependencyWarning
warnings.simplefilter('ignore', DependencyWarning)
from .__version__ import __title__, __description__, __url__, __version__
from .__version__ import __build__, __author__, __author_email__, __license__
warnings.warn(warning, RequestsDependencyWarning)
# Check imported dependencies for compatibility.
try:
check_compatibility(urllib3.__version__, chardet.__version__)
except (AssertionError, ValueError):
warnings.warn("urllib3 ({0}) or chardet ({1}) doesn't match a supported "
"version!".format(urllib3.__version__, chardet.__version__),
RequestsDependencyWarning)
# Attempt to enable urllib3's SNI support, if possible
from pip._internal.compat import WINDOWS
if not WINDOWS:
try:
from pip._vendor.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 pip._vendor.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__
