distutils.version.LooseVersion replacement

compare_version.py

import operator
import re

split_version_re = re.compile('[.+-]')

class LooseVersion:
    def __init__(self, s):
        self.vs = split_version_re.split(s)
        self.n  = max(len(x) for x in self.vs)
    def cmp(self, other, op):
        n = max(self.n, other.n)
        return op(tuple(x.zfill(n) for x in self.vs), tuple(x.zfill(n) for x in other.vs))
    def __lt__(self, other):
        return self.cmp(other, operator.lt)
    def __le__(self, other):
        return self.cmp(other, operator.le)
    def __gt__(self, other):
        return self.cmp(other, operator.gt)
    def __ge__(self, other):
        return self.cmp(other, operator.ge)
    def __eq__(self, other):
        return self.cmp(other, operator.eq)
    def __ne__(self, other):
        return self.cmp(other, operator.ne)