address.py 文件源码

def requires_non_ascii(self):
        """
        Can the address be converted to an ASCII compatible encoding?
        """
        if not is_pure_ascii(self.mailbox):
            return True
        if not is_pure_ascii(self.hostname):
            try:
                idna.encode(self.hostname)
            except idna.IDNAError:
                return True
        return False