How to change a veriable value inside if statment and apply in all in python

I am creating a feature in my chat bot that change the bot agent name. I declare the bot name at the top.

bot = "Bot" 

Than i create a function that take input from user and change name of the bot

    elif "c-a" in inp:
        settt = True
        print(f"Choose agent(1-7):", end=' ')
        while settt:
            s_c = input()

            try:
                s = int(s_c)
            except ValueError:
                s = str(s_c)

            sv = type(s)

            if sv is int:
                if s == 1:
                    bot = "Bhaskar"
                    return bot
                elif s == 2:
                    bot = "Divya"
                    return bot
                elif s == 3:
                    bot = "Nayan"
                    return bot
                elif s == 4:
                    bot = "Sruti"
                    return bot
                elif s == 5:
                    bot = "Gagan"
                    return bot
                elif s == 6:
                    bot = "Ruchi"
                    return bot
                elif s == 7:
                    bot = "Abhishek"
                    return bot
                else:
                    a()
                    print("I didn't get it. Chose between 1 to 7 or type /h for help & /q for discard")
                    q()
            else:
                if s == "/h":
                    bot_list()
                elif s == "/q":
                    settt = False
                else:
                    a()
                    print("I didn't get it. Chose between 1 to 7 or type /h for help & /q for discard")
                    q()

But bot value remains same. it will not changed.