using python ftp

[Matt Funk]

Hi,

i was wondering whether someone can point me whether the following
already exists.

I want to connect to a server , download various files (for whose name i
want to be able to use a wildcard), and store those files in a given
location on the hard drive. If the file already exists i do not want to
download it.

This seems fairly trivial and i would assume that there should be some
sort of implementation that does this easily but i didn't find anything
googling it.

Otherwise i was going to do it "by hand" using ftplib:
1) connect to server,
2) change to directory on server
3) get listing
4) match the file pattern i want to the listing
5) check if file already exists
6) download file if matched and doesn't exist

Can anyone offer any advice whether this already done somewhere?

thanks
matt