擅长:python、mysql、java
<pre><code>>>> a = {}
>>> b = {}
>>> a['key1'] = b
>>> b['key2'] = 'final value'
>>> a['key1']
{'key2': 'final value'}
>>> a['key1']['key2']
'final value'
>>>
</code></pre>
<p>我测试过了,很管用!在</p>