How can I make the command case insensitive?

Question

Python

I need to make a command in the discord bot that will work regardless of case, that is, I write the command !answer or !Answer and it works. Here is the code:

<

@client.command( pass_context = True )
async def Answer (ctx, text):
    variable = [
        "Конечно да",
        "Конечно нет",]
    await ctx.send("{}".format(random.choice(variable)))

Answer 1

string.lower() as an option