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pythonlistdictionary
Tyler Knight
Tyler Knight

Reputation: 193

What's the correct way to create a nested list/dictionary in python, similar to a json like structure?

I'm trying to create a nested dictionary / list json-like structure in python, however I'm not sure if my solution is optimal. Esseeantially I'm building list of lists for teams, which will then house their players, player ids, etc.

Below is is my code. Ideally, if i wanted to find players on team alpha, i'd type

team_info['Alpha']['players']

however i have to refer to the location of 'players' in order to pull it, for example:

team_info['Alpha'][0]['players']

Example

players_list = [['A','B','C'],['D','E','F'],['G','H','I']]
id_list = [[1,2,3],[4,5,6],[7,8,9]]
teams = ['Alpha', 'Bravo', 'Charlie']

team_info = {}

for a,b in enumerate(teams): 
    players = {}
    ids = {}
    
    players['players']=players_list[a]
    ids['ids']=id_list[a]
    team_info[b]=[players,ids]

This doesn't work

team_info['Alpha']['players']

I have to reference by position.

team_info['Alpha'][0]['players']

Is there a better way to set this up?

Upvotes: 0

Views: 61

Answers (3)

Tanque
Tanque

Reputation: 315

I'm not exactly sure what you are trying to accomplish, but I guess you would get further by using actual nested dictionaries - take a look at this tutorial on them.

Instantiation:

nested_dict = { 
   'dictA': {
       'key_1': 'value_1', 
       'key_2': 'value_2'
   },
   'dictB': {
       'key_a': 'value_b', 
       'key_n': 'value_n'
   }
}

Access:

value = nested_dict['dictA']['name']

Upvotes: 0

Paul M.
Paul M.

Reputation: 10799

player_lists = [
    ["A", "B", "C"],
    ["D", "E", "F"],
    ["G", "H", "I"]
]

id_lists = [
    [1, 2, 3],
    [4, 5, 6],
    [7, 8, 9]
]

teams = [
    "Alpha",
    "Bravo",
    "Charlie"
]

team_info = {}

for team, player_list, id_list in zip(teams, player_lists, id_lists):
    team_info[team] = {
        "players": player_list,
        "ids": id_list
    }

Upvotes: 0

mad_
mad_

Reputation: 8273

You do not need two dicts you just need one with two keys

for a,b in enumerate(teams): 
    players_info={}
    players_info['players']=players_list[a]
    players_info['ids']=id_list[a]
    team_info[b]=players_info

Output of team_info['Alpha']['players']: ['A', 'B', 'C']

The final dict will look like 

{'Alpha': {'players': ['A', 'B', 'C'], 'ids': [1, 2, 3]},
 'Bravo': {'players': ['D', 'E', 'F'], 'ids': [4, 5, 6]},
 'Charlie': {'players': ['G', 'H', 'I'], 'ids': [7, 8, 9]}}

Upvotes: 2

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