How do I read a JSON object in Python?

Question

I'm working on a Python Pygame project were I have to work with JSON files. I'm trying to read a JSON file, but I just can't get it to print what I want to know.

This is the JSON file:

{
  "pokemons": {
    "5": {
      "name": "Snivy",
      "type": "Grass",
      "hp": 45,
      "attack": 45,
      "defence": 55,
      "speed": 63,
      "moves": [
        "Tackle",
        "Leer",
        "null",
        "null"
      ],
      "level": 4,
      "xp": 54
    },
    "2": {
      "name": "Tepig",
      "type": "Fire",
      "hp": 65,
      "attack": 63,
      "defence": 45,
      "speed": 45,
      "moves": [
        "Tackle",
        "Tail Whip",
        "Ember",
        "null"
      ],
      "level": 7,
      "xp": 11
    }
  }
}

I'm trying to read the "name", "type", etc from the different "ID's" aka "5" and "2", but I can only make it print "5" and "2" from the "pokemons" array

with open("data.json", "r") as f:
    data = json.load(f)
    for i in data["pokemons"]:
        print(i)

Iterate a dictionary as for k,v in data['pokemonds'].items(): print (k, v) — MohitC
– MohitC, Commented Apr 26, 2020 at 22:14

Mark Rotteveel · Accepted Answer · 2025-09-28 11:38:26Z

2

You've titled this "json read from array inside of array python", but you don't have JSON arrays (translated into Python lists) here - you have JSON objects (translated into Python dicts).

for i in data["pokemons"]:

data["pokemons"] is a dict, so iterating over it like this gives you the keys - "5" and "2". You can use those to index into the data:

data["pokemons"][i]

That gives you one of the objects (dicts) representing an individual Pokemon, from which you can access the name:

data["pokemons"][i]["name"]

Better yet, you can loop over the values of data["pokemons"] directly, instead of the keys:

for pokemon in data["pokemons"].values():
    name = pokemon["name"]

Or you can get both at once using .items(), for example:

for pid, pokemon in data["pokemons"].items():
    # use string formatting to display the pid and matching name together.
    print(f"pokemon number {pid} has name {pokemon['name']}")

edited Sep 28 at 11:38

Mark Rotteveel

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answered Apr 26, 2020 at 22:14

Karl Knechtel

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2 Comments

Theo Esberg Over a year ago

Thank you so much, im sorry for the wrong title, will change that. I have not worked that much with JSON files before so im realy happy for the help, thanks again!

Karl Knechtel Over a year ago

It's not really a question of "working with JSON files" - once you have made the .load call, it's ordinary Python data. But sometimes this is someone's first time dealing with deeply nested structures, I suppose.

Jhanvi Patel · Accepted Answer · 2020-04-26 22:35:45Z

1

My Solution

data = '{"pokemons": {"5": {"name": "Snivy","type": "Grass","hp": 45,"attack": 45,"defence": 55,"speed": 63,"moves": ["Tackle","Leer","null","null"],"level": 4,"xp": 54},"2": {"name": "Tepig","type": "Fire","hp": 65,"attack": 63,"defence": 45,"speed": 45,"moves": ["Tackle","Tail Whip","Ember","null"],"level": 7,"xp": 11}}}}'
datadict = json.loads(data)
dataOfId = datadict['pokemons']
for i in dataOfId:
      print(dataOfId[i]["name"])
      print(dataOfId[i]["type"])

answered Apr 26, 2020 at 22:35

Jhanvi Patel

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