add a pair of key/value for each element of a list of dicts

Question

I have the following data structure:

db['data'][products']

Inside that, i have a list of dicts:

[{'name':'John', 'id':1},
 {'name':'Matt', 'id':2}]

How to add a fix pair of key/value for each element of list ?

Results should be something like that:

[{'name':'John', 'id':1, 'new_key':'new_value'},
 {'name':'Matt', 'id':2, 'new_key':'new_value'}]

Thanks

[duplicate](https://stackoverflow.com/questions/14071038/add-an-element-in-each-dictionary-of-a-list-list-comprehension) — Aven Desta, Jan 07 '21 at 11:20
Does this answer your question? [Add an element in each dictionary of a list (list comprehension)](https://stackoverflow.com/questions/14071038/add-an-element-in-each-dictionary-of-a-list-list-comprehension) — costaparas, Jan 07 '21 at 11:21

score 0 · Answer 1 · answered Jan 07 '21 at 11:12

0

its just a list of dicts, iterate over them and update as needed:

for item in db['data']['products']:
    item['new_key'] = 'new_value'

answered Jan 07 '21 at 11:12

Nullman

score 0 · Accepted Answer · answered Jan 07 '21 at 11:41

0

with list comprehension:

result = [dict(item, **{'new_key':'new_value'}) for item in db['data']['products']]

answered Jan 07 '21 at 11:41

2 Answers2