python字典列表问题

Question

如何将dict
dict = [{'a':'1','b':'2','c':'3'},{'a':'1','b':'2','c':'3'}]
转换转换成_dict？
_dict = {'a':['1','1'], 'b':['2','2'], 'c':['3','3']}**

Answer 1

cc = {}
dict = [{'a':'1','b':'2','c':'3'},{'a':'1','b':'2','c':'3'}]
for i in dict:

for k, v in i.items():
    if k not in cc:
        cc[k] = [v]
    else:
        cc[k].append(v)

print(cc)

Answer 2

#!/usr/bin/env python
# -*- coding: utf-8 -*-

dic = [{'a':'1','b':'2','c':'3'},{'a':'1','b':'2','c':'3'}]

_dict = {}
for d in dic:
    for k, v in d.items():
        _dict.setdefault(k, []).append(v)