Hmm, where are you getting the coordinates from?
The url's of the step-by-step directions?

In any case, create a file containing lines with
<lat> <long> <descr>

And add something like the following function to parse_mapsonus.py:

def parse_simple(desc):

    f = open(desc)

    wps=[]

    while 1:

        line = f.readline().strip()

        if not line: break

        parts = line.split()

        lat = float(parts[0])

        long = float(parts[1])

        desc = " ".join(parts[2:])

        wps.append(Wpoint(Coord(lat, long), desc))

    return wps

and replace the line that reads 'wpoints = parse(inname)' with 'wpoints = parse_simple(inname)'