擅长:python、mysql、java
<p>您可以使用<code>a >= 0</code>,而不是<code>a == 0 or a > 0</code>。</p>
<p><a href="https://docs.python.org/library/stdtypes.html#comparisons" rel="nofollow noreferrer">https://docs.python.org/library/stdtypes.html#comparisons</a></p>