擅长:python、mysql、java
<p>将<a href="http://docs.python.org/2/library/functions.html#any" rel="nofollow">^{<cd1>}</a>与<a href="https://docs.python.org/2/tutorial/classes.html#generator-expressions" rel="nofollow">generator expression</a>一起使用:</p>
<pre><code>>>> lst = []
>>>
>>> for i in xrange(4):
... lst.append({})
... lst[i]['a'] = False
...
>>> any(d['a'] for d in lst)
False
>>> lst[1]['a'] = True
>>> any(d['a'] for d in lst)
True
</code></pre>
<p>顺便说一句,不要使用<code>list</code>作为变量名。它隐藏了内置函数/类型<a href="https://docs.python.org/2/library/functions.html#list" rel="nofollow">^{<cd2>}</a></p>