Phasma ex Machina

#!/usr/bin/python
import urllib, re, sys

def usage():
    print "Usage:\n\t%s username password" % sys.argv[0]
    print "\n\tusername, password - login credentials for www.eetlijst.nl"

def overview_page(username, password):
    eetlijsturl = "http://eetlijst.nl/%s?%s" % (username, password)
    return urllib.urlopen(eetlijsturl)

def process_page(page_pointer):
    start_row = re.compile("<td.*(ma|di|wo|do|vr|za|zo)"
        " ([0-9][0-9]?-[0-9][0-9]?)")
    end_row = re.compile("</tr>")
    selection_row = re.compile("(leeg|nop|eet|kook).gif")
    in_row = False
    summary = ""
    for x in page_pointer:
        if (in_row and end_row.search(x)):
            #End of a row
            if len(summary.strip("-| ")) > 4:
                print "%s total: %d" % (summary, total)
            in_row = False

        if (not in_row and start_row.search(x)):
            #Processing column
            in_row = True
            total = 0
            date, day = process_title(start_row, x)
            summary = "%-5s |" % date

        if (in_row and selection_row.search(x)):
            #Start of a row
            selection, count = process_setting(selection_row, x)
            if count > 1:
                summary += " %s%-d |" % (selection, count)
            else:
                summary += " %s  |" % selection
            total += count

def process_title(regex, title_row):
    response = regex.search(title_row)
    day = response.group(1)
    date = response.group(2)
    return (date, day)
    
def process_setting(regex, setting_row):
    groups = regex.search(setting_row).groups()
    selection = groups[0]
    count = len(regex.findall(setting_row))
    selection_letter = '-'
    if (selection == 'eet'):
        selection_letter = 'E'
    if (selection == 'kook'):
        selection_letter = 'K'
    if (selection == 'nop'):
        selection_letter = 'X'

    if selection_letter == '-' or selection_letter == 'X':
        count = 0

    return (selection_letter, count)

if len(sys.argv) != 3:
    usage()
    exit(1)

page_pointer = overview_page(sys.argv[1], sys.argv[2])
process_page(page_pointer)