Question: I have a python script bundled into a application (I'm on a mac) and have the application set to be able to open .zip files. But when I say "open foo.zip with bar.py" how do I access the file that I have passed to it? 

Additional info:
Using tkinter.

What's a good way to debug this, as there is no terminal to pass info to?

Answer: 
You should be using sys.argv[1]

```
task = sys.argv[1].decode('utf-8')
if task == u'uppercase':
    pass
elif task == u'openitems':
    item_paths = sys.argv[2:]
    for itempath in item_paths:
        itempath = itempath.decode('utf-8')

```
If I'm not greatly mistaken, it should pass the name of the file as the first argument to the script - `sys.argv[1]`.