擅长:python、mysql、java
<p>您可以使用<a href="https://docs.python.org/2/library/collections.html#collections.defaultdict" rel="nofollow noreferrer">collections.defaultdict</a>而不是将dict_base定义为dict</p>
<p>可以这样-</p>
<pre><code>from collections import defaultdict
dict_1={'Sedan': 'Accord',
'SUV': 'Pilot'
}
dict_2={'Sedan': 'Camry',
'SUV': 'Highlander'
}
dict_base = defaultdict(list)
for d in (dict_1, dict_2):
for key, value in d.items():
dict_base[key].append(value)
</code></pre>