🚨 extremely unpythonic python alert 🚨

nonpythonic.py

import re

def is_valid_IP(strng):
    t = re.compile("^\d+$")
    try:
        return (lambda m: len(m) is 4 and reduce(lambda acc, el: acc and el, [True] + m))(map(lambda x: (lambda x: x < 256 and x >= 0)(int(x)) and (x[0] is not '0' if len(x) > 1 else True) and t.match(x) is not None, strng.split('.')))
    except Exception:
        return False