discord py leveling system

1@client.event
2async def on_member_join(member):
3    with open('users.json', 'r') as f:
4        users = json.load(f)
5
6    await update_data(users, member)
7
8    with open('users.json', 'w') as f:
9        json.dump(users, f)
10
11
12@client.event
13async def on_message(message):
14    if message.author.bot == False:
15        with open('users.json', 'r') as f:
16            users = json.load(f)
17
18        await update_data(users, message.author)
19        await add_experience(users, message.author, 5)
20        await level_up(users, message.author, message)
21
22        with open('users.json', 'w') as f:
23            json.dump(users, f)
24
25    await client.process_commands(message)
26
27
28async def update_data(users, user):
29    if not f'{user.id}' in users:
30        users[f'{user.id}'] = {}
31        users[f'{user.id}']['experience'] = 0
32        users[f'{user.id}']['level'] = 1
33
34
35async def add_experience(users, user, exp):
36    users[f'{user.id}']['experience'] += exp
37
38
39async def level_up(users, user, message):
40    with open('levels.json', 'r') as g:
41        levels = json.load(g)
42    experience = users[f'{user.id}']['experience']
43    lvl_start = users[f'{user.id}']['level']
44    lvl_end = int(experience ** (1 / 4))
45    if lvl_start < lvl_end:
46        await message.channel.send(f'{user.mention} has leveled up to level {lvl_end}')
47        users[f'{user.id}']['level'] = lvl_end
48
49@client.command()
50async def level(ctx, member: discord.Member = None):
51    if not member:
52        id = ctx.message.author.id
53        with open('users.json', 'r') as f:
54            users = json.load(f)
55        lvl = users[str(id)]['level']
56        await ctx.send(f'You are at level {lvl}!')
57    else:
58        id = member.id
59        with open('users.json', 'r') as f:
60            users = json.load(f)
61        lvl = users[str(id)]['level']
62        await ctx.send(f'{member} is at level {lvl}!')