You are given a function 'secret()' that accepts a single integer parameter and returns an integer. In your favorite programming language, write a command-line program that takes one command-line argument (a number) and determines if the secret() function is additive [secret(x+y) = secret(x) + secret(y)], for all combinations x and y, where x and y are all prime numbers less than the number passed via the command-line argument.

https://www.python.org/downloads/

Built on Python 3.5.2

To run the command line program:

$ python3 secret.py

To update secret function, see line 13 in secret.py

To run tests:

$ python3 secret_unit_test.py