Warn command discord.py (logging)

Best way to to store warnings is probably json file:

import discord
from discord.ext import commands
import json



with open('reports.json', encoding='utf-8') as f:
  try:
    report = json.load(f)
  except ValueError:
    report = {}
    report['users'] = []



intents = discord.Intents.default()

intents.members = True
client = commands.Bot(command_prefix = "", intents = intents)



@client.command(pass_context = True)
@has_permissions(manage_roles=True, ban_members=True)
async def warn(ctx,user:discord.User,*reason:str):
  author = ctx.author
  if not reason:
    await ctx.send("Please provide a reason")
    return
  reason = ' '.join(reason)
  await ctx.send(f'**{user.mention} has been warned by {author.name}.**')
  await user.send(f'You have been warned in **{ctx.guild.name}** by **{author.name}**.')
  for current_user in report['users']:
    if current_user['name'] == user.name:
      current_user['reasons'].append(reason)
      break
  else:
    report['users'].append({
      'name':user.name,
      'reasons': [reason,]
    })
  with open('reports.json','w+') as f:
    json.dump(report,f)

  with open('reports.json','w+') as f:
    json.dump(report,f)
  if len(report['users']) >= 7:
    await user.kick(reason='You reached 7 warnings')

Now user will be kicked after reaching 7 warnings. You can use command warnings <@user> to check users warnings by creating another command:

@client.command(pass_context = True)
async def warnings(ctx,user:discord.User):
  for current_user in report['users']:
    if user.name == current_user['name']:
      await ctx.send(f"**{user.name} has been reported {len(current_user['reasons'])} times : {','.join(current_user['reasons'])}**")
      break
  else:
    await ctx.send(f"**{user.name} has never been reported**")

EDIT: you have to create a file called reports.json in same path/folder your bot is coded in.