Чтобы получить роль по имени пользователя в discord.py, вы можете использовать следующие методы:

Метод 1. Перебор всех ролей в гильдии

@bot.event
async def on_message(message):
    # Get the guild
    guild = message.guild

    # Get the user's name
    username = message.author.name

    # Iterate through all roles in the guild
    for role in guild.roles:
        # Check if the role name matches the user's name
        if role.name == username:
            # Found the role
            print(role.name)
            break

Метод 2: использование функции discord.utils.get

@bot.event
async def on_message(message):
    # Get the guild
    guild = message.guild

    # Get the user's name
    username = message.author.name

    # Use the discord.utils.get function to find the role by name
    role = discord.utils.get(guild.roles, name=username)

    # Check if the role exists
    if role is not None:
        # Found the role
        print(role.name)

Метод 3: использование атрибута discord.Member.roles

@bot.event
async def on_message(message):
    # Get the user
    user = message.author

    # Get the user's name
    username = user.name

    # Iterate through the user's roles
    for role in user.roles:
        # Check if the role name matches the user's name
        if role.name == username:
            # Found the role
            print(role.name)
            break