icmp

class icmp:
    def __init__(self, _type, code, checksum, data):
        pass

    @classmethod
    def from_bytes(cls, t):
        pass
        return cls(_type, code, checksum, data)

    @classmethod
    def from_dict(cls, t):
        pass
        return cls(_type, code, checksum, data)

    @classmethod
    def from_random(cls):
        pass
        return cls(_type, code, checksum, data)


if __name__ == "__main__":
    i0 = icmp(0, 0, b'\xde\xad', b'\xbe\xef')
    i1 = icmp.from_bytes(b'\x00\x00\xde\xad\xbe\xef')
    i2 = icmp.from_dict({'type': 0, 'code': 0, 'checksum': b'\xde\xad', 'data': b'\xbe\xef'})
    i3 = icmp.from_random()