代碼退出狀態255

Question

我寫了下面的代碼來獲取給定整數數組中唯一的唯一元素。

def lonelyinteger(a): 
    for x in a: 
     answer = a.count(x) 
     if(a.count(x) < 2) 
      answer=x 
    return answer 
if __name__ == '__main__': 
    a = input() 
    b = map(int, raw_input().strip().split(" ")) 
    print lonelyinteger(b) 

錯誤

File "solution.py", line 5 if(a.count(x) < 2) ^ SyntaxError: invalid syntax

Exit Status 255

請告訴我在哪裏我想念

Answer 1

你缺少:在該行的末尾。低於這個

Answer 2

正確的代碼（修改代碼）：

def lonelyinteger(a): 
    # added a : that was missing in the for 
    # loop (syntax error) 
    for x in a: 
     answer = a.count(x) 
     if(a.count(x) < 2): 
      answer=x 
    return answer 
if __name__ == '__main__': 
    a = input() 
    b = map(int, raw_input().strip().split(" ")) 
    print lonelyinteger(b)