Reading a file in same directory as code with relative path

[dan.j.weber at gmail.com]

I'm trying to read an XML file in the same directory as my python code,
using minidom:

document = xml.dom.minidom.parse("data.xml")

How can I read in the file "data.xml" without knowing it's full
path--just that it's in the same directory as my code file? Thanks for
any help with this. I'm new to python and really liking it so far.