擅长:python、mysql、java
<p>由<a href="https://stackoverflow.com/questions/2489435/python-check-if-a-number-is-a-perfect-square">Python: Check if a number is a perfect square</a>协助</p>
<p>您应该运行:</p>
<pre><code>if int(math.sqrt(int(line))+.5) ** 2 == int(line):
</code></pre>