擅长:python、mysql、java
<p>只需在访问值/值之前添加类型检查:</p>
<pre><code>isinstance(v, dict)
</code></pre>
<p>或者</p>
<pre><code>isinstance(v, basestring)
</code></pre>
<p>代码是:</p>
<pre><code>for movie, val in movies.iteritems():
print movie
for v in val.values():
if isinstance(v, dict):
for x in v.values():
print x
elif isinstance(v, basestring):
print v
</code></pre>