我试图检查日期是否有效,但是我一直试图找出trying年日期是否有效。我继续收到以下消息:
最后一次运行于02/11/2018,12:49:03 您的函数说29/2/1754有效,但无效。
我知道这不是a年。我试图在有效日期函数中,每年不是is年的时候都返回False的值。
您能给我的任何信息,将不胜感激。谢谢
def isLeapYear(y):
assert y > 1753, False
return y % 4 == 0 and (y % 100 != 0 or y % 400 == 0)
def daysIn(y, m):
assert 1 <= m <= 12, False
if m == 9 or m == 4 or m == 6 or m == 11:
return 30
elif m == 1 or m == 'March' or m == 'May' or m == 'July':
return 31
elif m == 8 or m == 10 or m == 12 or m == 3 or m == 5 or m == 7:
return 31
elif m == 2 and isLeapYear(y) is True:
return 29
elif m == 2 and isLeapYear(y) is False:
return 28
else:
return False
def validDate(y, m, d):
try:
if daysIn(y, m) and isLeapYear(y):
return True
except AssertionError:
return False
if y > 1753 and 1 <= m <= 12 and 1 <= d <= 31:
return True
elif y == isLeapYear(y) and m == 2 and d == 29:
return False
else:
return False
if __name__ == "__main__":
isLeapYear(2012)
daysIn(2012, 10)
validDate(1752, 10, 10)
答案 0 :(得分:1)
您可以使用标准库的datetime模块。
from datetime import date
def validDate(y, m, d):
try:
date(y, m, d)
return True
except ValueError:
return False
答案 1 :(得分:1)
问题出在validDate
函数中,在此函数中,您不检查日期,而仅当月份有天时(每个月为True)。
def validDate(y, m, d):
assert 1 <= d <= daysIn(y, m)
或者如果validDate
应该返回布尔值,请尝试:
def validDate(y, m, d):
if y <= 1754:
return False
if not (1 <= m <= 12):
return False
if m in (1, 3, 5, 7, 8, 10, 12):
days = 31
elif m == 2:
leap = y % 4 == 0 and (y % 100 != 0 or y % 400 == 0)
days = 29 if leap else 28
else:
days = 30
return 1 <= d <= days