Calculator.py

# imports
import math

# define functions
def addition(num1,num2):
    return num1+num2
def subtraction(num1,num2):
    return num1-num2
def multiplication(num1,num2):
    return num1*num2
def division(num1,num2):
    return num1/num2
def second_Power(enteredNumber):
    return enteredNumber**2
def square_root(enteredNumber):
    return math.sqrt(enteredNumber)

# Options for users to choose from
print("1. Addition")
print("2. Subtraction")
print("3. Multiplication")
print("4. Division")
print("5. second_power")
print("6. square_root")
print("7. exit")

# Start loop.
while True:
    
    # user input number
    choice=input("choose operation: ")
   
    # stop and exit program
    if choice == '7':
        print("Goodbye!")
        break
    
    # addition
    if choice == '1':
        num1=int((input("enter first number: ")))
        num2=int((input("enter second number: ")))
        print(num1, "+" ,num2, "=", addition(num1, num2))
    
    # subtraction
    if choice == '2':
        num1=int((input("enter first number: ")))
        num2=int((input("enter second number: ")))
        print(num1, "-", num2, "=", subtraction(num1, num2))
    
    # multiplication
    if choice == '3':
        num1=int((input("enter first number: ")))
        num2=int((input("enter second number: ")))
        print(num1, "*", num2, "=", multiplication(num1, num2))
    
    # division
    if choice == '4':
        num1=int((input("enter first number: ")))
        num2=int((input("enter second number: ")))
        print(num1, "/", num2, "=", division(num1, num2))
    
    # second_power
    if choice =='5':
        num3 = int(input("enter number: "))
        print(str(num3)+"^2 =",second_Power(num3))
    
    # square_root
    if choice =='6':
        num3 = int(input("enter number: "))
        print("√",num3,"=",math.sqrt(num3))