Why does the message local variable 'balanc' referenced before assignment come out?

Question

Python

I am writing a telegram bot and pytelegrambotapi

Here is a line of code:

elif call.data == 'four':
        if balanc >= 10:
            balanc = balanc - 10
            bot.answer_callback_query(call.id, "Ты купил кролика")
        elif balanc < 10:
            bot.answer_callback_query(call.id, "У вас недостаточно денег!")

When I press the "four" button on the callback, the bot Crashes and a message appears in the terminal:

"local variable 'balanc' referenced before assignment"

What could this be?

Answer 1

Because the balanc variable is defined outside of this function