擅长:python、mysql、java
<p>假设一个点有两个属性,<code>x</code>和<code>y</code>,那么您可以使用</p>
<p><code>x_min = min(p['x'] for p in points_in_list)</code>计算x的最小值</p>
<p>例如:</p>
<pre><code>>>> a = {'x': 10, 'y':10}
>>> b = {'x': 5, 'y':20}
>>> c = {'x': 50, 'y':50}
>>> points_in_list = [a,b,c]
>>> points_in_list
[{'y': 10, 'x': 10}, {'y': 20, 'x': 5}, {'y': 50, 'x': 50}]
>>> x_min = min(p['x'] for p in points_in_list)
>>> x_min
5
</code></pre>