Python calculator - I can't get the expected output

Question

This is my code : I attached my outputs and expected outputs as screen shots. I need to get the last expected output. Please see the screenshots I attached.Does anybody can help me?

This is the task.

Task 1: Get user input

Section 1:

Input Arithmetic operation Reset or Termination Section 2:

Input first operand Input second operand Reset or Termination Task 2: Implement functions that performs given arithmetic operation on the given operands and produces the result

Arithmetic operation and the two operands as parameters Return the result of the arithmetic operation

Task 3: Call the calculation function by passing user input to select_op(choice) and display the result from within the select_op(choice) function

    Here are some of the messages you might want to display to the users at certain occasions. Copy and paste them as necessary in your code in appropriate situations to help with auto-grading.  If there is any differences between the output of your code and the expected output, it will be displayed once you click the "Check" button. You can click on "Show differences" button to highlight the difference between outputs. This will be helpful for you to change your code to match the expected output.

def add(x, y):
    return x + y

def subtract(x, y):
    return x - y

def multiply(x, y):
    return x * y

def divide(x, y):
    return x / y

def power(x, y):
    return x ** y

def remainder(x, y):
    return x % y

def select_op(choice):
    if choice == '+':
        num1 = int(input("Enter first number: "))
        print(num1)
        num2 = int(input("Enter second number: "))
        print(num2)
        print(float(num1), "+", float(num2), "=", float(add(num1, num2)))

    elif choice == '-':
        num1 = float(input("Enter first number: "))
        num2 = float(input("Enter second number: "))
        print(num1, "-", num2, "=", subtract(num1, num2))

    elif choice == '*':
        num1 = float(input("Enter first number: "))
        num2 = float(input("Enter second number: "))
        print(num1, "*", num2, "=", multiply(num1, num2))

    elif choice == '/':
        num1 = int(input("Enter first number: "))
        print(num1)
        num2 = int(input("Enter second number: "))
        print(num2)

        try:
            result = num1 / num2
            print(f"{num1} / {num2} = {result}")
        except ZeroDivisionError:
            print("float division by zero")
            print(float(num1), "/", float(num2), "=", "None")

    elif choice == '^':
        num1 = float(input("Enter first number: "))
        num2 = float(input("Enter second number: "))
        print(num1, "^", num2, "=", power(num1, num2))

    elif choice == '%':
        num1 = float(input("Enter first number: "))
        num2 = float(input("Enter second number: "))
        print(num1, "%", num2, "=", remainder(num1, num2))

    elif choice == '#':
        return -1

    elif choice == '$':
        return 0

    else:
        print("Invalid input")
        return 1


while True:
    print("Select operation.")
    print("1.Add      : + ")
    print("2.Subtract : - ")
    print("3.Multiply : * ")
    print("4.Divide   : / ")
    print("5.Power    : ^ ")
    print("6.Remainder: % ")
    print("7.Terminate: # ")
    print("8.Reset    : $ ")

    # take input from the user
    choice = input("Enter choice(+,-,*,/,^,%,#,$): ")
    print(choice)

    if select_op(choice) == -1:
        print("Done. Terminating")
        exit()

Output 1 : correct

(https://i.stack.imgur.com/8JYL1.png)

Output 2 : correct

(https://i.stack.imgur.com/tqokg.png)

Output 3 : correct

(https://i.stack.imgur.com/8Wcd3.png)

Output 4 : Wrong

(https://i.stack.imgur.com/UXx3i.png)

Answer 1

In the output number 4, in the second number input i can see 0$. What is the dollar symbol for? If you want to convert string to integer by using int(input("")), string/char you are giving as input must rapresent a number. So it cant contain any letters or symbols. That will always lead to an error and app crash when user gives wrong type of input. You should parse your string input before converting it to int. Store your input as string. Parse it, check if it doesn't contain any letters or symbols and then convert it to integer. It is wrong to convert users input directly to a certain data type. You cant control if user gives you input you wouldn't expect. The answer is simple, you are trying to give input as number and control input "$ symbol" in single line. That line is a string so when you try to convert it to int it gives you wrong literal error. No symbols, letters string can be converted to int. Also you dont have to use reset. Once you give him second number, the result will be printed and then everything starts again cuz it is in an endless loop until you give him # as control input.