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import sys
try:
# Our match_hostname function is the same as 3.10's, so we only want to
# import the match_hostname function if it's at least that good.
# We also fallback on Python 3.10+ because our code doesn't emit
# deprecation warnings and is the same as Python 3.10 otherwise.
if sys.version_info < (3, 5) or sys.version_info >= (3, 10):
raise ImportError("Fallback to vendored code")
from ssl import CertificateError, match_hostname
except ImportError:
try:
# Backport of the function from a pypi module
from backports.ssl_match_hostname import ( # type: ignore
CertificateError,
match_hostname,
)
except ImportError:
# Our vendored copy
from ._implementation import CertificateError, match_hostname # type: ignore
# Not needed, but documenting what we provide.
__all__ = ("CertificateError", "match_hostname")
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