擅长:python、mysql、java
<p>也许您想在使用is作为键之前截断浮点值?</p>
<p>可能是这样的:</p>
<pre><code>a = 0.122334
round(a, 4) #<-- use this as your key?
</code></pre>
<p>你的钥匙现在是:</p>
<pre><code>0.1223 # still a float, but you have control over its quality
</code></pre>
<p>使用方法如下:</p>
<pre><code>dictionary[round(a, 4)]
</code></pre>
<p>找回你的价值观</p>