Python驅動程序許可證考試

Question

我想要比較列表中的字符串，但是當我輸出它時，它會將正確的列表與另一個列表中的相同字符串進行比較，每次列表20次。 ，我將不勝感激如果我能得到一些幫助，看看有什麼我做錯了

def main():   

     submitted = ['A','D','C','A','C','A','D','C','A','D','A','C','B','D','A','C','C','A','D','B'] 

     outfile = open('submitted.txt', 'w') 

     for item in submitted: 

      outfile.write(item + '\n') 

     outfile.close() 

     infile = open('submitted.txt', 'r') 

     submitted = infile.readlines() 

     infile.close() 

     sub_count = 0 

     while sub_count < len(submitted): 
      submitted[sub_count] = submitted[sub_count].rstrip('\n') 
      sub_count += 1 

     print 'The answers you submitted were ', submitted 
     print '******************************************************************************************' 


     correct = ['A','C','A','A','D','B','C','A','C','B','A','D','C','A','D','C','B','B','D','A'] 

     outfile = open('correct.txt', 'w') 

     for item in correct: 

      outfile.write(item + '\n') 

     outfile.close() 

     infile = open('correct.txt', 'r') 

     correct = infile.readlines() 

     infile.close() 

     cor_count = 0 

     while cor_count < len(correct): 
      correct[cor_count] = correct[cor_count].rstrip('\n') 
      cor_count += 1 

     print 'The correct answers are ', correct 
     print '******************************************************************************************' 

     print 'BELOW IS THE COMPARISON OF YOUR ANSWERS TO THE CORRECT ANSWERS' 

     correct_count = 0 

     incorrect_count = 0 

     number_questions = 0 

     while (number_questions < 20): 

      number_questions += 1 

      for ans in submitted: 
       for cor in correct: 
        if cor == ans: 
         print cor, ans ,' = correct' 
         correct_count += 1 

        elif cor != ans: 
         incorrect_count += 1 
         print cor, ans ,' = wrong' 


main() 

Answer 1

你遍歷在對提交/正確反應的所有而要被遍歷匹配雙。改用：

for ans, cor in zip(submitted, correct): 
    if ans == cor: 
     # do stuff 
    else: 
     # do other stuff 

另外，直接取出while循環的這個外部;它沒有做任何事情。