exercise_launcher.py

import subprocess # for running subprocesses like we are in the command line
import os
import sys

def launch_notebook( filepath ):
    """ Launch a python notebook for the user. To make their life easier. """
    raise NotImplementedError

## This might be a problem as we won't know which editor to open...
## Also the opening process will be diffenent for different systems.
## Even finding the "default" way to open a .py file for editing might be
## different across systems.
##
## SOLUTION: Just open default .txt editor and say "it's a good thing you're working barebones. No crutches."
##
def launch_python_script( filepath ):
    """ Launch an editor for the named python script. """

    import subprocess, os
    if sys.platform.startswith('darwin'):
        subprocess.call(('open', filepath))
    elif os.name == 'nt':
        os.startfile(filepath)
    elif os.name == 'posix':
        subprocess.call(('xdg-open', filepath))


if __name__ == '__main__':
    launch_python_script("hello.py")