Lists are weird when they are instance members

[python newbie]

I didn't say that right.  I meant to say that I now finally understood
what's going on now, with your replies, but I will take a slight break from
the app I'm writing, and do some ingesting of the core Python concepts.

"python newbie" <mesteve_b at hotmail.com> wrote in message
news:VfIJb.5485$kp4.731 at newssvr29.news.prodigy.com...
> thanks for the helpful replies.
>  I guess I was just in confusion as to why I was able to leave alone the
> string variables in class FileGroup, such
> as sourceDir and destinDir, and nothing unpredictable happened with those,
> but with the list variable, I had to treat differently.
>  But after I again read closely, Python In a Nutshell, I'm sure I will
> understand.
>