gistfile1.txt

import json
from collections import defaultdict

def f1(path):
    with open(path, 'r') as f:
        return json.load(f)

def f2(items):
    result = defaultdict(list)
    for i in items:
        k = i.get('category', 'Unknown')
        result[k].append(i)
    return result

def f3(d):
    out = {}
    for k, v in d.items():
        s = sum(x['value'] for x in v)
        m = s / len(v)
        out[k] = m
    return out

def runner():
    data = f1('data.json')
    grouped = f2(data)
    stats = f3(grouped)
    for k, v in stats.items():
        print(f"{k}: {v:.2f}")

if __name__ == '__main__':
    runner()

@JessicaWachtel @JessicaWachtel what's this?