List in nested dictionary in Python

Question

What I want is this:

Dic = {'name':{'id':[1,2,3]}}

I have seen answers of how to do this but the ones I saw required the list to be known when they are inserting. the problem I have is I don't know when I'll have to insert in Dic['name']['id'] .

Is there a way to make something like this Dic['name']['id'].append(0) ?

What I did before was this

Dic={}
Dic['name']=[] 
Dic['name'].append('id') 

but now I have to store some values of ID too and those are list of values.

Answer 1

You can use a defaultdict to get what you want, for example:

from collections import defaultdict


d = {'name': defaultdict(list)}
d['name']['id'].append(0)
d['name']['id'].append(1)
d['name']['id'].append(2)

print(d)
>>> {'name': defaultdict(<class 'list'>, {'id': [0, 1, 2]})}

Answer 2

Dic = {}
Dic['name'] = {}
Dic['name']['id'] = []
Dic['name']['id'].append(0)
print(Dic)

This code segment gives the following output

{'name': {'id': [0]}}

I think this is the output you need