[Tutor] pass arg to list

[Steven D'Aprano]

On Thu, Jul 18, 2019 at 11:34:09AM -0700, Anirudh Tamsekar wrote:

> My script below is blowing index out of range after adding the args.

> version = sys.argv[1]

> Traceback (most recent call last):
>   File "/Users/atamsekar/Projects/PulseSO/trunk/swrelease/samplexls.py",
> line 5, in <module>
>     version = sys.argv[1]
> IndexError: list index out of range


The obvious question is, are you passing command line arguments to your 
script?

How are you calling your script? If you are running it from an IDE you 
need to tell the IDE to include command line arguments.

If you run it like this, from the operating system's command line:

    python samplexls.py

then there are no command line arguments and sys.argv[1] will be out of 
range. You need to run something like this:

    python samplexls.py argument1 argument2


Try putting:

    print(sys.argv)

at the start of your script and see what is there.


-- 
Steven