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
p1 will be a string like this “N1, N2, operator”
the result will be 600
the result will be 70
scalc(“50,20,-“) the result will be 30
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.