leetcode1360

import datetime
class Solution:
    def daysBetweenDates(self, date1: str, date2: str) -> int:
        year1,month1,day1 = date1.split('-')
        d1 = datetime.datetime(int(year1),int(month1),int(day1))
        
        year2,month2,day2 = date2.split('-')
        d2 = datetime.datetime(int(year2),int(month2),int(day2))
        
        interval = abs(d2 - d1)
        return interval.days

算法思路：使用python内置的datetime模块。