user_data.py

import json
import random

with open('/home/jovyan/workspace/Instruments/Instruments.inter.json') as f:
    inters = json.load(f)

correlated_users = {}

for user, inter in inters.items():
    inter = inter[:-2]
    for item in inter:
        if item in correlated_users:
            correlated_users[item].append(user)
        else:
            correlated_users[item] = [user]

for user_inter in correlated_users.values():
    random.shuffle(user_inter)

with open('/home/jovyan/workspace/Instruments/Instruments.inter.user.json', 'w', encoding = "utf-8") as f:
    json.dump(correlated_users, f, indent = 4, ensure_ascii = False)