Python中，打印帶有格式的元組，沒有工作

Question

下面是代碼：

#! /usr/bin/python 

def goodDifference(total, partial, your_points, his_points): 

    while (total - partial >= your_points - his_points): 
     partial = partial+1 
     your_points = your_points+1 

     return (partial, your_points, his_points) 

def main(): 
    total = int(raw_input('Enter the total\n')) 
    partial = int(raw_input('Enter the partial\n')) 
    your_points = int(raw_input('Enter your points\n')) 
    his_points = int(raw_input('Enter his points\n')) 
    #print 'Partial {}, yours points to insert {}, points of the other player {}'.format(goodDifference(total, partial, your_points, his_points)) 
    #print '{} {} {}'.format(goodDifference(total, partial, your_points, his_points)) 
    print goodDifference(total, partial, your_points, his_points) 

if __name__ == "__main__": 
    main() 

兩個評論打印與格式不工作，執行它報告此錯誤時：IndexError: tuple index out of range。 最後一次打印（未評論），工作正常。 我已經閱讀了很多Python格式字符串的例子，我不明白爲什麼我的代碼不工作。

我的Python版本是2.7.6

Answer 1

str.format()需要單獨的參數，而你傳遞一個元組作爲單說法。因此，它將元組替換爲第一個{}，然後再沒有剩下的項目留給下一個。要通過元組作爲單獨的參數，它unpack：

print '{} {} {}'.format(*goodDifference(total, partial, your_points, his_points)) 

Answer 2

爲什麼你不只是在打印輸出元組值是多少？

t = goodDifference(total, partial, your_points, his_points) 
print '{', t[0], '} {', t[1], '} {', t[2], '}'