判断百度某一经纬度的地图颜色值python

 1 from PIL import Image
 2 import MySQLdb
 3 import os
 4 import urllib
 5 import time
 6 from multiprocessing.dummy import Pool as ThreadPool 
 7 
 8 def gaidu_is_water((latitude,longitude)):
 9     while True:
10         try:
11             ll = longitude + ',' + latitude
12             url = "http://api.map.baidu.com/staticimage?center="+ll+"&zoom=18&width=1&height=1"
13             data = urllib.urlretrieve(url, ll)
14             im = Image.open(ll)
15             rgb_im = im.convert('RGB')
16             print rgb_im.getpixel((0, 0))
17             if rgb_im.getpixel((0, 0)) in [(167, 192, 224),(104, 137, 167),(153, 183, 219)]:
18                 # print 'is water'
19                 flag = 1
20             else:
21                 flag = 0
22                 # print 'not water'
23             # print ll,'ok'
24             break
25         except Exception, e:
26             print e
27             time.sleep(5)
28             continue
29 
30 if __name__ == '__main__':
31     print gaidu_is_water('114.24419,22.332689')
32     pool = ThreadPool(20)
33     results = pool.map(gaidu_is_water, lls)
34     pool.close() 
35     pool.join()