擅长:python、mysql、java
<p>将最后一部分更改为:</p>
<pre><code>for i in range(len(users)):
if users[i] == whatUser:
theQuiz = quizzes[i]
theGrade = grades[i]
print("Username: ", whatUser)
print("Quizzes: ", theQuiz)
print("Grades: ", theGrade)
</code></pre>
<p><code>index(x)</code>只返回元素<code>x</code>的第一个索引。因此,必须循环并处理所有匹配项。在</p>