def verify(self):
        """
        Raises an exception if the bytes provided to update do not match the
        signature or the signature does not match the public key.
        """

        Raises an exception if the bytes provided to update do not match the
        signature or the signature does not match the public key.
        
stackoverflow/venv/lib/python3.6/site-packages/cryptography/hazmat/primitives/asymmetric/__init__.py