leafleat-nomnom/nomnom-gc.py

import io
import requests
import os.path
import time
import shutil

print "Going to delete all contents of geocoded-cities.txt and creating a backup named 'geocoded-cities_back.txt'"
time.sleep(2) # little delay for reading

# check if file exists, if yes copy to backup and empty it
if os.path.isfile('geocoded-cities.txt')==True:
	shutil.copy2('geocoded-cities.txt', 'geocoded-cities_back.txt')
	with open('geocoded-cities.txt', 'w+') as ft:
		ft.truncate()
	ft.close()

# empty logfile
with open('geocode.log', 'w+') as fl:
	fl.truncate()
	fl.close()

with open('cities.txt') as fp:
	for city in fp:
		try:
			payload = {'format': 'json', 'q': ' '}
			payload['q'] = city
			r = requests.get('http://open.mapquestapi.com/nominatim/v1/search', params=payload)
			placesjson = {}
			placesjson = r.json()
			firstResult = placesjson[0] # nominatim delivers (depending on input) multiple resultsets, first one should be the desired
			with open('geocoded-cities.txt', 'aw+') as fgeo:
				fgeo.write("%s, %s, %s\n" % (city.rstrip(), firstResult['lat'], firstResult['lon']))
			print "Status [OK]: %s, %s, %s" % (city.rstrip(), firstResult['lat'], firstResult['lon'])
			with open('geocode.log', 'aw+') as flog:
				flog.write("Status [OK]: %s, %s, %s\n" % (city.rstrip(), firstResult['lat'], firstResult['lon']))
		except:
			print "Status[Not Found]: %s" % city.rstrip()
			with open('geocode.log', 'aw+') as flog:
                                 flog.write("Status [Not Found]: %s\n" % city.rstrip())

fgeo.close()
fp.close()
flog.close()