Freebase python -

i tried python example freebase , run in windows , ubuntu machine.

http://mql.freebaseapps.com/ch04.html

import sys            # command-line arguments, etc. import simplejson     # json encoding. import urllib         # uri encoding. import urllib2        # high-level url content fetching.  # these constants we'll use. server = 'api.freebase.com'              # metaweb server service = '/api/service/mqlread'         # metaweb service  # compose our mql query python data structure. # query array in case multiple bands share same name. band = sys.argv[1]                       # desired band, command line. query = [{'type': '/music/artist',       # our mql query in python.           'name': band,                  # place band in query.           'album': [{ 'name': none,      # none python's null.                       'release_date': none,                       'sort': 'release_date' }]}]  # put query in envelope envelope = {     'query': query,              # query property specifies query.     'escape': false              # turns off html escaping.     }  # these 5 lines key code using mqlread encoded = simplejson.dumps(envelope)            # json encode envelope. params = urllib.urlencode({'query':encoded})    # escape request parameters. url ='http://%s%s?%s' % (server,service,params) # url request. f = urllib2.urlopen(url)                        # open url file. response = simplejson.load(f)                   # read , json parse response.  # check errors , exit message if query failed. if response['code'] != '/api/status/ok':                   # if not okay...     error = response['messages'][0]                        # first msg object.     sys.exit('%s: %s' % (error['code'], error['message'])) # display code,msg.  # no errors, handle result result = response['result']           # open response envelope, result.  # check number of matching bands if len(result) == 0:     sys.exit('unknown band') elif len(result) > 1:     print "warning: multiple bands named " + band + ". listing first only."  result = result[0]                    # first band array of matches. if not result['album']:               # exit if band has no albums     sys.exit(band + ' has no known albums.')  album in result['album']:         # loop through result albums.     name = album['name']              # album name.     date = album['release_date']      # release date timestamp or null.     if not date: date = ''                 else: date = ' [%s]' % date[0:4]  # 4-digit year in brackets.     print "%s%s" % (name, date)       # print name , date. 

however, did not work. explain why got error?

traceback (most recent call last):   file "mql.py", line 29, in <module>     f = urllib2.urlopen(url)                        # open url file.   file "c:\python27\lib\urllib2.py", line 126, in urlopen     return _opener.open(url, data, timeout)   file "c:\python27\lib\urllib2.py", line 394, in open     response = self._open(req, data)   file "c:\python27\lib\urllib2.py", line 412, in _open     '_open', req)   file "c:\python27\lib\urllib2.py", line 372, in _call_chain     result = func(*args)   file "c:\python27\lib\urllib2.py", line 1199, in http_open     return self.do_open(httplib.httpconnection, req)   file "c:\python27\lib\urllib2.py", line 1168, in do_open     h.request(req.get_method(), req.get_selector(), req.data, headers)   file "c:\python27\lib\httplib.py", line 955, in request     self._send_request(method, url, body, headers)   file "c:\python27\lib\httplib.py", line 989, in _send_request     self.endheaders(body)   file "c:\python27\lib\httplib.py", line 951, in endheaders     self._send_output(message_body)   file "c:\python27\lib\httplib.py", line 811, in _send_output     self.send(msg)   file "c:\python27\lib\httplib.py", line 773, in send     self.connect()   file "c:\python27\lib\httplib.py", line 754, in connect     self.timeout, self.source_address)   file "c:\python27\lib\socket.py", line 562, in create_connection     sock.connect(sa) 

one more thing, using python 2.7 , don't have special proxy configuration internet setting.

api.freebase.com has been retired , python client library never updated work new endpoint.