Python - iterate .lua and export nodes (ESO Harvest addon)

gistfile1.py

import re
from pprint import pprint
import os

debug = True

base_dir = os.path.join(os.path.expanduser('~'),'Documents','Elder Scrolls Online','liveeu','SavedVariables')
print("Assuming working directory of [{0}]\r\n".format(base_dir))
lua = os.path.join(base_dir,'HarvestMap.lua')

region_re = '\[".*\/.*"\]'
region_p = re.compile(region_re)
node_re_xy = '\[\d\]\s=\s\d\.\d{6}'  # all x and y co-ords
node_xy_p = re.compile(node_re_xy)
node_re_item = '\[1\]\s=\s\[\[\w*\]\]'  # item resource
node_item_p = re.compile(node_re_item)

nodes = []
current_zone = None
current_node = None

with open(lua, 'rb') as f:
    line = f.next()
    while line != None:
        try:
            region = region_p.search(line)
            if region:
                ''' Processing a new region now '''
                zone_string = region.group().replace('["','').replace('"]','').split('/')
                zone_info = {
                    'zone': zone_string[0],
                    'area': zone_string[1]
                }
                if debug: print("\r\n"); pprint(zone_info); print("{0}".format("".ljust(60,"=")))
                current_zone = zone_info
                current_node = zone_info
            elif current_zone:
                ''' No region found so we're still looking for nodes '''
                node_xy = node_xy_p.search(line)
                if node_xy:
                    if not node_xy.group()[1] in current_node:
                        ''' not already a co-ord '''
                        current_node[node_xy.group()[1]] = node_xy.group().split('=')[1].strip()
                    else:
                        # create new blank one based on current zone
                        nodes.append(current_node)
                        current_node = current_zone
                        current_node[node_xy.group()[1]] = node_xy.group().split('=')[1].strip()
                        pass
                else:
                    ''' see if we're processing a resource item '''
                    item = node_item_p.search(line)
                    if item:
                        current_node['resource'] = item.group().split('=')[1].replace('[','').replace(']','').strip()
                        if '1' in current_node and '2' in current_node:
                            nodes.append(current_node)
                            if debug: pprint(current_node)
                        else:
                            if debug: print("Failed regex on node, dropping from results"); pprint(current_node); pprint(current_node.keys());
                        current_node = current_zone
                
            line = f.next()
        except Exception,e:
            print e.message
            break

if not debug: pprint(nodes)