To get used to wxPython, I took vegaseat's mortgage calculator snippet written in Csharp and converted it to Python. I was surprised how easy it was:
# a simple mortgage calulator using wxPython
#...

This is a way to do it without slicing:
# separate words with alternating 2 and 3 spaces
# simply alternate between odd and even count

s = 'one two three four five'

space = " "
new = ""...

To save and load a whole object like a list, you have to use the module pickle:
import pickle

myList = [1,2,3,4]

# save/dump the list as an object
file = open("myList.dat", "w")...