leetcode1360

 1 import datetime
 2 class Solution:
 3     def daysBetweenDates(self, date1: str, date2: str) -> int:
 4         year1,month1,day1 = date1.split('-')
 5         d1 = datetime.datetime(int(year1),int(month1),int(day1))
 6         
 7         year2,month2,day2 = date2.split('-')
 8         d2 = datetime.datetime(int(year2),int(month2),int(day2))
 9         
10         interval = abs(d2 - d1)
11         return interval.days

算法思路：使用python内置的datetime模块。