165. Compare Version Numbers

Python

https://leetcode.com/problems/compare-version-numbers/

from itertools import zip_longest


class Solution:
    def compareVersion(self, version1: str, version2: str) -> int:
        for pair in zip_longest(version1.split('.'), version2.split('.')):
            raw1, raw2 = pair
            v1 = 0 if raw1 is None else int(raw1)
            v2 = 0 if raw2 is None else int(raw2)

            if v1 < v2:
                return -1
            if v1 > v2:
                return 1

        return 0