def mergeKLists_TLE2(self, lists):
        lists = filter(lambda x: x is not None, lists)
        if not lists:
            return

        result = lists[0]
        for i in xrange(1, len(lists)):
            result = self.mergeTwoLists(result, lists[i])
        return result
If the requirement is frozen to pypi, check for a new version.
dataset/ETHPy150Open algorhythms/LeetCode/022 Merge k Sorted Lists.py/Solution.mergeKLists_TLE2--crossover with--dataset/ETHPy150Open django-extensions/django-extensions/django_extensions/management/commands/pipchecker.py/Command.check_pypi