def is_blocked()

in iptables.py [0:0]

• 10 lines of code
• 8 McCabe index (conditional complexity)

    def is_blocked(self, ip: typing.Union[Entry, str, netaddr.IPNetwork]) -> typing.Optional[Entry]:
        """Finds out if an IP address or block is contained within a block in this chain. Returns the matching block
        rule if any"""
        if isinstance(ip, Entry):
            if ip in self.items:
                return ip
            return
        if isinstance(ip, str):
            ip = netaddr.IPNetwork(ip)
        for entry in self.items:
            # Either the block is contained within a rule, or the rule is contained within the block...who knows!
            if ip in entry.as_net or entry.as_net in ip:
                return entry