Simple calculator task in the Data Science lecture, implemented using a "pseudo" switch statement to replace the multiple if/else statements

simple_calculator

import getpass
from getpass import getpass





def demo(argument):
    options = {
    1: one() ,
    2: two(),
    3: three(),
    4: four()
    }
    return options.get(argument, "nothing")





def one():
        result = number_2 + number_1
        return ("\n The output of {} + {} is {} ".format(number_1, number_2,result))






def two():
     result = number_2 - number_1
     return( "\n The output of {} - {} is {} ".format(number_2, number_1, result))



def three():
    result = number_2 * number_1
    return( "\n The output of {} * {} is {} ".format(number_1, number_2,result))



def four():
     result = number_2/number_1
     return( "\n The output of {} / {} is {} ".format(number_1, number_2, result))




print("""1. Addition\n 2. Subtraction \n3. Multiplication\n 4. Division\n""")

operator = int(input("Choose  your operator by entering the corresponding number "))
number_1 = int(input("Enter the first number"))
number_2 = int(input("Enter the 2nd number "))

print(demo(operator))

Thanks for sharing. Will do mine later