python 两日期间的天数(计算机科学导论)

def daysBetweenDates(year1, month1, day1, year2, month2, day2):
 def daysinyear(year,month,day):#the day of this year
  count=0
  if year%400==0 or (year%100!=0 and year%4==0):
daysOfMonths1 = [ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
for i in range(month-1):
 count += daysOfMonths1[i]
return count + day
  else:
daysOfMonths2 = [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
for i in range(month-1):
 count += daysOfMonths2[i]
return count + day  
 import calendar
 def daysofyear(year1,year2):# the day of (year2-year1)
  minusyearsdays=(year2-year1)*365+calendar.leapdays(year1,year2)
  return minusyearsdays
 total = daysinyear(year2, month2, day2)-daysinyear(year1, month1, day1)+daysofyear(year1,year2)
 return total
  

计算两不同日期间的天数 难点在于每月日期不同 存在平年闰年 借鉴了其他大神的日期函数 将年份和月份拆开分别计算天数再进行求和运算