python

You are going to enhance the prior assignment by doing the following

1) Move all the functions into  Mylib.py

2) Use import to include Mylib into the code

3) Test the code and make sure that the prior code is still working

4) Add the following function into  Mylib

    scalc(p1)

    p1 will be a string like this "N1, N2, operator"

    examples

    scalc("20,30,*")

    the result will be 600

    scalc("50,20,+")

    the result will be 70

scalc("50,20,-")    the result will be 30

   scalc("60,20,/")

    the result will be 30

use string functions to parse the first number, the second number, and the operator from the input string.
use the prior functions (add, subtract, divide and multiply ) to do the calculations.