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geoload.py
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63 lines (52 loc) · 1.81 KB
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import urllib.request, urllib.parse, urllib.error
import sqlite3
import json
import time
import ssl
import sys
# buffer is replaced by memoryview in Python 3
buffer = memoryview
# If you are in China use this URL:
# serviceurl = "http://maps.google.cn/maps/api/geocode/json?"
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.encode()), ))
try:
data = cur.fetchone()[0]
print("Found in database ",address)
continue
except:
pass
print('Resolving', address)
url = serviceurl + urllib.parse.urlencode({"sensor":"false", "address": address})
print('Retrieving', url)
uh = urllib.request.urlopen(url)
data = uh.read().decode()
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.encode()),buffer(data.encode()) ) )
conn.commit()
time.sleep(1)
print("Run geodump.py to read the data from the database so you can vizualize it on a map.")