Query base station information by LAC and cell ID from cellocation.com

cell_station_search.py

#!/usr/bin/python3

import requests
import time
import json

INPUT_FILE = 'diff.csv'
OUTPUT_FILE = 'diff.out.csv'
THRESHOLD = 290 #times
THRESHOLD_TIME = 300.0 #sec
URL = 'http://api.cellocation.com/cell/?mcc=460&mnc=0&lac={lac}&ci={cell}&output=json'

tbegin = 0
creq = 0

def brake():
    global tbegin, creq
    tsleep = THRESHOLD_TIME - (time.time() - tbegin)
    print('Suspend for %.2f seconds...' % tsleep)
    time.sleep(tsleep)
    tbegin = time.time()
    creq = 0

def main():
    global tbegin, creq
    f = open(INPUT_FILE, 'r')
    fout = open(OUTPUT_FILE, 'w')
    tbegin = time.time()
    for line in f:
        if not len(line): continue
        data = line.split(',')
        lac, cell = int(data[0]), int(data[1])
        if time.time() - tbegin > THRESHOLD_TIME:
            tbegin = time.time()
            creq = 0
        if creq >= THRESHOLD: brake()
        while True:
            print('Looking up %d, %d...' % (lac, cell))
            r = requests.get(URL.format(lac=lac,cell=cell))
            result = json.loads(r.text)
            if result['errcode'] == 0:
                fout.write('%d,%d,%s,%s,%s,%s\n' % (lac, cell, result['lat'], result['lon'], result['radius'], result['address']))
                break
            elif result['errcode'] == 10001:
                fout.write('%d,%d,,,,\n' % (lac, cell))
                break
            else:
                brake()
        creq += 1

if __name__ == '__main__':
    main()