Calculator.py

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 tables(x):
    for i in range(1,11):
        print(i , " X ", x , "=" , multiply(x,i))
          
print("Select operation.")
print("1.Addition")
print("2.Subtraction")
print("3.Multiplication")
print("4.Division")
print("5.Tables")

while True:
    # Take input from the user
    choice = input("Enter choice(1/2/3/4/5): ")

    # Check if choice is one of the four options
    if choice in ('1', '2', '3', '4', '5'):
        num1 = float(input("Enter first number: "))

        if(int(choice) < 5):
            num2 = float(input("Enter second number: "))
        
        if choice == '1':
            print(num1, "+", num2, "=", add(num1, num2))

        elif choice == '2':
            print(num1, "-", num2, "=", subtract(num1, num2))

        elif choice == '3':
            print(num1, "*", num2, "=", multiply(num1, num2))

        elif choice == '4':
            print(num1, "/", num2, "=", divide(num1, num2))
        elif choice == '5':
            tables(int(num1))
            
        break
    else:
        print("Invalid Input")
print("Thank you ")