calculator.py

# calculator

def add(n1, n2):
    return n1 + n2

def subtract(n1,n2):
    return n1 - n2

def multiply(n1, n2):
    return n1 * n2

def divide(n1, n2):
    return n1 / n2

operations ={
    "+": add,
    "-": subtract,
    "*": multiply,
    "/": divide,
}
def calculator():
    num1 = float(input("type 1st num: "))
    should_continue = True
    while should_continue:
        for symbol in operations:
            print(symbol)
        operation_symbol = input("Pick and operation from above: ")
        num2 = float(input("type next num: "))
        calculation_function = operations[operation_symbol]
        answer = calculation_function(num1, num2)

        print(f"{num1} {operation_symbol} {num2} = {answer}")
        if input(f"Type 'y' to continue calculating with {answer} , or type 'n' to start a new calculation: ") == 'y':
            num1 = answer
        else:
            should_continue = False
            calculator()


calculator()