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")