Why does this sometimes print "Leap year" twice?-CodePudding

This code is for a leap year calculator/identifier assignment I had. While I passed it, I was wondering why it printed "Leap year" twice depending on some years. Sometimes it did, sometimes it didn't depending on the host I was using, eg. Thonny, Coding Rooms, replit.

Here is my code:

year = int(input("Which year do you want to check? "))

if year%4==0:
    if year0==0:
        if year@0==0:
            print("Leap year")
        else:
            print("Not leap year")
        print("Leap year")
    else:
        print("Not leap year")
else:
    print("Not leap year")

CodePudding user response：

If it is divided by 100 and 400 in your case, it will print that it is leap year.

Because it will go into the year0 and then into if year@0 and will print leap year. Then it will go to the next statement after the else of year@0 and it will print it again. (the parts between **)

if year0==0:
        if year@0==0:
            **print("Leap year")**
        else:
            print("Not leap year")
        **print("Leap year")**

CodePudding user response：

Alternatively, you could also write this way to make it more succinct and easy to understand:

def is_leap(year):
    return not(year % 4 and year % 100) or year % 400 == 0


print(is_leap(2000))      #  True
print(is_leap(2024))      #  True 
print(is_leap(2022))      #  False