擅长:python、mysql、java
<pre><code>for key,val in myDict.items():
for key1,val1 in val.items():
for key2,val2 in val1.items():
d = final_dict[key2] if key2 in final_dict else defaultdict(list)
for k,v in val2.items():
d[k].append(v)
final_dict[key2] = d
</code></pre>