tk password module

I am working on a script that utilizes tk in order to connect users to an online account. It must be done on their personal machines and I would like to have them use a gui. Is there a method that can take text and make it unreadable (like password form in html)? thanks -J --

grabbing Pictures from the web

I am new to python (2 weeks old) and I would like to write a script that grabs pictures from the web (specifically flickr) and put them on a Tk Canvas for a slide show/editing program. my 2 questions are 1) How do I grab a picture from the web 2) is the use of the Tk canvas for working with the