在python函數中while循環的問題

Question

我有一個要求電影的小應用程序。當評級超過50時，請返回觀看。如果沒有，請選擇另一部電影。雖然當我到達movieDec中的條件時，它不會回到函數的頂部來計算電影的分數。無法弄清楚這一點。

def getScore(): 
    choose = raw_input("pick a movie ") 
    rt = RT() 
    info = rt.search(choose) 
    rating1 = info[0].get('ratings').get('critics_score') 
    rating2 = info[0].get('ratings').get('audience_score') 
    stars = (rating1 + rating2)/2 
    return rating1, rating2, stars 


def movieDec(): 
    critic, aud, stars = getScore() 
    print 'Critics gave it a %s' %critic 
    print 'Audiences gave it a %s' %aud 
    print 'The average rating is %s' %stars 
    while stars < 50: 
     print "That's no good, pick again" 
     getScore() 
    print 'Good choice.' 

Answer 1

你是不是在更新循環的stars變量。嘗試：

while stars < 50: 
    print "That's no good, pick again" 
    critic, aud, stars = getScore() 

Answer 2

在你的循環，你忽略了getScore()返回值：

getScore() 

修改成：

critic, aud, stars = getScore() 

Answer 3

這個修正碼above會調用getScore（）函數的第二次（如果星< 50），但是，直到循環看起來像它不會顯示分數：

while stars < 50: 
    print "That's no good, pick again" 
    critic, aud, stars = getScore() 
    print 'Critics gave it a %s' %critic 
    print 'Audiences gave it a %s' %aud 
    print 'The average rating is %s' %stars