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geoload.py
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geoload.py
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import urllib
import sqlite3
import json
import time
import ssl
serviceurl = "http://maps.googleapis.com/maps/api/geocode/json?"
# Deal with SSL certificate anomalies Python > 2.7
# scontext = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
scontext = None
conn = sqlite3.connect('geodata.sqlite')
cur = conn.cursor()
cur.execute('''
CREATE TABLE IF NOT EXISTS Locations (address TEXT, geodata TEXT)''')
fh = open("where.data")
count = 0
for line in fh:
if count > 200 : break
address = line.strip()
print ''
cur.execute("SELECT geodata FROM Locations WHERE address= ?", (buffer(address), ))
try:
data = cur.fetchone()[0]
print "Found in database ",address
continue
except:
pass
print 'Resolving', address
url = serviceurl + urllib.urlencode({"sensor":"false", "address": address})
print 'Retrieving', url
uh = urllib.urlopen(url, context=scontext)
data = uh.read()
print 'Retrieved',len(data),'characters',data[:20].replace('\n',' ')
count = count + 1
try:
js = json.loads(str(data))
# print js # We print in case unicode causes an error
except:
continue
if 'status' not in js or (js['status'] != 'OK' and js['status'] != 'ZERO_RESULTS') :
print '==== Failure To Retrieve ===='
print data
break
cur.execute('''INSERT INTO Locations (address, geodata)
VALUES ( ?, ? )''', ( buffer(address),buffer(data) ) )
conn.commit()
time.sleep(1)
print "Run geodump.py to read the data from the database so you can visualize it on a map."