Simple adder

Created on Dec. 9, 2016 by Julien Palard

Write a program that print the result of simple addition.

Warning

You should work on this exercise with your own installation of Python, on your computer. Learn how for Mac OSX or Windows.

If no parameters are given, you must print the following error message:

usage: python3 solution.py OP1 OP2

Example

$ python solution.py 1 2
3
$ python solution.py 2 3
5
$ python solution.py
usage: python3 solution.py OP1 OP2
$

Hints

To get the parameters given from the command line, you'll need sys.argv.

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