How to access nested dictionary in python

Question

How to access nested dictionary in python. I want to access 'type' of both card and card1.

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

I want only type from both the dictionary. how can i get. I use the following code but getting error:

>>> 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

score 5 · Answer 1 · answered May 24 '18 at 10:40

5

You can use:

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

card
wechat

Or list comprehension:

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

answered May 24 '18 at 10:40

llllllllll

16,169
4
31
54

how to use using get(). – user_123 May 24 '18 at 10:45
You don't need to use `get()` here, but if you want, use `item.get('type')` – llllllllll May 24 '18 at 10:47

score 2 · Answer 2 · answered May 24 '18 at 10:42

When you iterate a dictionary, e.g. for item in data, you are iterating keys. You should use a view which contains the information you require, such as dict.values or dict.items.

To access the key and related type by iteration:

for k, v in data.items():
    print(k, v['item'])

Or, to create a list, use a list comprehension:

lst = [v['item'] for v in data.values()]
print(lst)

score -2 · Answer 3 · answered Apr 10 '20 at 20:05

-2

from a nested python dictionary like this, if I want to access lets, say article_url, so I have to program like this

[item['article_url'] for item in obj.values()]

answered Apr 10 '20 at 20:05

Shaina Raza

1,474
17
12

How to access nested dictionary in python

3 Answers3

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