Python 407 不定數迴圈 閏年判斷

Python TQC

題目說明：¶

(1) 請撰寫一程式，以不定數迴圈的方式讓使用者輸入西元年份，然後判斷它是否為閏年（leap year）或平年。其判斷規則如下：每四年一閏，每百年不閏，但每四百年也一閏。
(2) 假設此不定數迴圈輸入-9999則會結束此迴圈。

輸入與輸出會交雜如下，輸出的部份以粗體字表示¶

2017
2017 is not a leap year.
2000
2000 is a leap year.
2016
2016 is a leap year.
2009
2009 is not a leap year.
2018
2018 is not a leap year.
-9999

Solution¶

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while True:
    n = eval(input())
    if(n == -9999): break
    else:
        if(((n % 4 == 0) and (n % 100 !=0)) or (n % 400 == 0)):
            print("{} is a leap year.".format(n))
        else:
            print("{} is not a leap year.".format(n))

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