Discord.py

import discord
from discord.ext import commands

intents = discord.Intents.default()
intents.messages = True
intents.guilds = True
intents.members = True

bot = commands.Bot(command_prefix='!', intents=intents)

@bot.event
async def on_ready():
    print(f'Connecté en tant que {bot.user}')

@bot.event
async def on_member_join(member):
    channel = discord.utils.get(member.guild.text_channels, name='général')
    if channel:
        await channel.send(f'Bienvenue {member.mention} sur le serveur !')

@bot.event
async def on_member_remove(member):
    channel = discord.utils.get(member.guild.text_channels, name='général')
    if channel:
        await channel.send(f'{member.mention} a quitté le serveur.')

@bot.command()
async def hello(ctx):
    await ctx.send('Salut !')

@bot.command()
async def ping(ctx):
    await ctx.send(f'Pong ! {round(bot.latency * 1000)}ms')

@bot.command()
async def serveur(ctx):
    await ctx.send(f'Nom du serveur : {ctx.guild.name}\nNombre de membres : {ctx.guild.member_count}')

bot.run('TOKEN')