cli.py 文件源码

def convert(self, value, param, ctx):
        if value.startswith('ext:'):
            ip, _, port = value[4:].partition(':')
            try:
                IPv4Address(ip.decode('UTF-8', 'ignore'))
            except AddressValueError:
                self.fail('invalid IP address: {}'.format(ip), param, ctx)
            if port:
                try:
                    port = int(port, 0)
                except ValueError:
                    self.fail('invalid port number: {}'.format(port), param, ctx)
            else:
                port = None
            return ip, port
        return super(NATChoiceType, self).convert(value, param, ctx)