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Geonames Python wrapper
import sys
import urllib
import urllib2
import json
import logging
class GeonamesError(Exception):
def __init__(self, status):
Exception.__init__(self, status) # Exception is an old-school class
self.status = status
def __str__(self):
return self.status
def __unicode__(self):
return unicode(self.__str__())
class GeonamesClient(object):
BASE_URL = 'http://api.geonames.org/'
def __init__(self, username):
self.username = username
def call(self, service, params=None):
url = self.build_url(service, params)
try:
response = urllib2.urlopen(urllib2.Request(url))
json_response = json.loads(response.read())
except urllib2.URLError, e:
raise GeonamesError('API didnt return 200 response.')
except ValueError:
raise GeonamesError('API did not return valid json response.')
else:
if 'status' in json_response:
raise GeonamesError(json_response['status']['message'])
return json_response
def build_url(self, service, params=None):
url = '%s%s?username=%s' % (GeonamesClient.BASE_URL, service, self.username)
if params:
if isinstance(params, dict):
params = dict((k, v) for k, v in params.items() if v is not None)
params = urllib.urlencode(params)
url = '%s&%s' % (url, params)
return url
# http://api.geonames.org/timezoneJSON?lat=47.01&lng=10.2&username=demo
def find_timezone(self, params):
return self.call('timezoneJSON', params)

canhnht commented Oct 19, 2017

+1. Thanks a lot.

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