IN PYTHON ONLY step by step please so I can learn! please read the question carefully, and add the condition for the error conditions.

Write a program missing.py that takes two arguments as a command-line argument: an integer `N`, and a set of `N - 1` distinct integers between 1 and N separated by a space as a string. The program should print out the missing number in the set.

$ python missing.py 5 "1 3 2 5"

The missing number is 4.

an error for any of the following conditions:

* a non-integer value is provided in the first or as part of the second argument

* the number of items provided in the second argument does not match `N-1`

* there are duplicate values in the second argument