Picasa Web Albums upload script

Recently I was searching for some simple way to upload a bunch of photos
to Picasa Web Albums. After some searches I found this post:
http://wanted.eu.org/en/computers/linux/uploading_photos_to_picasaweb

The script provided there did the thing for me, but it was creating a new
album every time it was used. Looking through code give me some ideas on
how to implement some more features. So I installed gdata-python-client
from Google and write some code from the scratch.

Here's what I've got:

Usage: upload2picasa.py [options] albumname filename1.jpg filename2.jpg
...
    Uploads jpeg files to Google's Picasa Web Albums service.
    Running for the first time will ask for login/password and save them
    to ~/.google_auth (be sure to check its access rights, password is
    stored as plain text).
Options:
  -h, --help    show this help message and exit
  -i, --init    call in init mode, asking login/password
  -l, --list    list user's albums
  -p, --public  create album as public (private by default)
  -n, --new     create new album (even if the album w/same name exists)

This is a script for uploading photos to Picasa Web Albums, with some
handy features. For more information including some examples, visit it's
page at Google Code: http://code.google.com/p/upload2picasa