How would you access sub-dictionaries in a nested json response dictionary when the primary (first level) dictionary key varies?

I have a json response like this:

{'3830': {'success': True, 'data': {'categories': [{'id': 2, 'description': 'Single-player'}, {etc...

I would like to access the sub-dictionary categories, however the primary dictionary key, 3830 in the above example, varies. The json response is the result of requests.get iterating through a list, thus the primary dictionary key changes with each response. I can’t figure out how to set a variable within the function that contains the contents of categories.

I tried:

data = await response.json()
mp_data = data['3830']['data']['categories']

which of course worked for the first iteration as the 3830 matched, but failed with KeyError on following iterations. Also tried using a variable for first level like ['*'] and [*] but this didn’t work either.

Any ideas on the best way to do this? Is it possible?

>Solution :

If it is always the first key that you want to access, use

first_key = list(data.keys())[0]

Or

first_key = next(data.keys())

To get the first key and then use this to access the lower level data

mp_data = data[first_key]['data']['categories']