I came across a list of Python editors and a list of features here: What IDE to use for Python?
Among those features were "Integrated Python Debugging". As I'm trying to decide on a text editor to use, I thought I'd look it up, because I don't know what debugging is more than "fixing bugs". That left me none the wiser however, so now I'm asking: as a beginner with Python, how will having this feature in a text editor affect me?
With a debugger you can pause your program at various points and inspect what the values of your different variables are. A debugger allows you to slowly "step" through your program and verify that the code is doing what you expect it too.
Here's an article about debugging with Eclipse and PyDev.