How to get the Member object knowing the id?

Question

Python

I want to make a !info command that will show the date the account was created, from the phone / from the PC and (what just doesn’t work) the date of entering the server

@client.command(pass_context = True)
async def info(ctx):
    args = ctx.message.content.lstrip('{}info '.format(config.get('config.prefix')))
    if len(args) > 0:
        try:
            print(int(args.split('<@')[1].split('>')[0]))
            user = await client.fetch_user(int(args.split('<@')[1].split('>')[0]))
            member = await Guild.fetch_member(int(args.split('<@')[1].split('>')[0])) # Вот как я сделал
            emb = discord.Embed(
                title = f'Информация о {user.name}',
                colour = discord.Colour.from_rgb(
                    color_neutral[0],
                    color_neutral[1],
                    color_neutral[2]),
                timestamp = ctx.message.created_at)
            emb.add_field(name = 'Дата создания аккаунта:', value = str(user.created_at).split(' ')[0], inline = True)
            emb.add_field(name = 'Дата входа на сервер:', value = str(member.joined_at).split(' ')[0], inline = True)
            if member.is_on_mobile():
                emb.add_field(name = 'С телефона', value = str(' '), inline = True)
            else:
                emb.add_field(name = 'С пк', value = str(' '), inline = True)
            emb.set_thumbnail(url=user.avatar_url)
            await ctx.send(
                embed = emb,
                delete_after=float(config.get('config.time_before_delete'))
            )
        except:
            await ctx.send(
                embed = discord.Embed(
                    title = f'Ошибка',
                    colour = discord.Colour.from_rgb(
                        color_negative[0],
                        color_negative[1],
                        color_negative[2]),
                    timestamp = ctx.message.created_at),
                delete_after=float(config.get('config.time_before_delete')))
    else:
        print(ctx.message.author.id)
        user = await client.fetch_user(ctx.message.author.id)
        member = await Guild.fetch_member(ctx.message.author.id) # Нуу это тоже самое
        emb = discord.Embed(
            title = f'Информация о {ctx.message.author.name}',
            colour = discord.Colour.from_rgb(
                color_neutral[0],
                color_neutral[1],
                color_neutral[2]),
            timestamp = ctx.message.created_at)
        emb.add_field(name = 'Дата создания аккаунта:', value = str(user.created_at).split(' ')[0], inline = True)
        emb.add_field(name = 'Дата входа на сервер:', value = str(member.joined_at).split(' ')[0], inline = True)
        if member.is_on_mobile():
            emb.add_field(name = 'С телефона', value = str(' '), inline = True)
        else:
            emb.add_field(name = 'С пк', value = str(' '), inline = True)
        emb.set_thumbnail(url=ctx.message.author.avatar_url)
        await ctx.send(
            embed = emb,
            delete_after=float(
                config.get('config.time_before_delete')
            )
        )

Gives an error:

624301440973668352
Ignoring exception in command info:
Traceback (most recent call last):
  File "C:\Users\               \AppData\Local\Programs\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "D:\               \               \               \bot.py", line 789, in info
    member = await Guild.fetch_member(ctx.message.author.id)
TypeError: fetch_member() missing 1 required positional argument: 'member_id'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Максим\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\ext\commands\bot.py", line 903, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\Максим\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 859, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Users\Максим\AppData\Local\Programs\Python\Python37\lib\site-packages\discord\ext\commands\core.py", line 94, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: TypeError: fetch_member() missing 1 required positional argument: 'member_id'

Says that I did not write the member_id argument, but this is a lie

member = await Guild.fetch_member(ctx.message.author.id)

Don't suggest Guild.get_member, doesn't work

Answer 1

Help on function fetch_member in module discord.guild:
async fetch_member(self, member_id)

Guild is a class and you are trying to call its method. Look towards OOP in python.
Briefly: Classes - types of objects, Objects - certain objects of a specified type

class Horse:  # тип - лошадь
     ...
     def send_to_space(self, encapsulate: bool):
         # Функция позволяющая отправить лошадь в космос
         self.move(Place("Space"))

special_horse_in_vacuum = Horse(...) # Один определенный сферический конь
special_horse_in_vacuum.send_to_space(True) # Отправляем определенного коня в вакуум

special_horse_in_vacuum = Horse # Определение лошади
special_horse_in_vacuum.send_to_space(True) # Пытаемся отправить определение "лошадь" в космос
# Получаем TypeError: send_to_space() missing 1 required positional argument: 'encapsulate'

You are trying to take the word "Server" and get a specific member from the "Server" definition, not a specific server.
You need to get the server from the context: https://discordpy.readthedocs.io/en/stable/ext/com...

@bot.command()
async def test(ctx, member_id: int):
    print(await ctx.guild.fetch_member(member_id))  # Получить пользователя через API
    print(ctx.guild.get_member(member_id))  # Получить пользователя из кэша бота

But in this case, everything can be much simpler, no need to reinvent the wheel, just read the documentation once , not outdated tutorials (hello pass_context) : https://discordpy.readthedocs.io/en/stable/ext/com
... discord.py has the concept of "converters" that make it much easier to write commands:

@bot.command()
async def info(ctx, *, member: discord.Member):
    await ctx.send(f"Вас называют: {member.display_name}. Ваш ID: {member.id}. etc...")

This, by the way, will allow you to call the command not only by mentioning the user, but also by his nickname, ID, and full tag: https://discordpy.readthedocs.io/en/stable/ext/com...

Get the user object ( User) does not make sense in this case, since the Member class all methods of the User class by inheritance.