Re: Mapping and Filtering Help for Lists

[Eric Wertman]

You should check out the sets module:

http://docs.python.org/lib/module-sets.html

>
The problem asks to create a "compareandremove" so that you can use it on a
string, to remove the words from the string that are contained in un_words.

The remaining words then need to be compared to the alterns list and either
bring back the word if no matches or bring back the list. To better explain
that i'll use an example.

If i do compareandremove('notepad a pencil with desk')

I need it so it removes words contained in un_words, so "a" and "with";
then compares the remaining words to alterns to find a match.

This should bring back:

['notepad', 'book', 'textbook', 'pencil', 'pen', 'pacer', 'desk']