如何在python中访问嵌套字典

Question

如何在python中访问嵌套字典.我想访问card和card1的' type '.

data = {
'1': {
'type': 'card',
'card[number]': 12345,
},
'2': {
'type': 'wechat',
'name': 'paras'
}}

我只想从字典中输入.我怎样才能得到.我使用以下代码但收到错误:

>>> for item in data:
...     for i in item['type']: 
...             print(i)
... 
Traceback (most recent call last):
  File "<stdin>", line 2, in <module>
TypeError: string indices must be integers

Answer 1

您可以使用:

In [120]: for item in data.values():
     ...:     print(item['type'])

card
wechat

或列表理解:

In [122]: [item['type'] for item in data.values()]
Out[122]: ['card', 'wechat']