擅长:python、mysql、java
<blockquote>
<p>only when all the elements are <em>Truthy</em>.</p>
</blockquote>
<p>真话!=<code>True</code>。在</p>
<p><code>all</code>本质上检查<code>bool(something)</code>是否是<code>True</code>(对于iterable中的所有<code>something</code>)。在</p>
<pre><code>>>> "?" == True
False
>>> "?" == False # it's not False either
False
>>> bool("?")
True
</code></pre>