求助查天气[2]

419416340

【Python 第44课】 查天气（2）中
在pycharm中运行
   # -*- coding: utf-8 -*-
import urllib2
import json
from city import city

cityname = raw_input('你想查哪个城市的天气？\n')
citycode = city.get(cityname)
if citycode:
    url = ('http://www.weather.com.cn/data/cityinfo/%s.html' % citycode)
    content = urllib2.urlopen(url).read()
    print(content)

你想查哪个城市的天气？
北京
Traceback (most recent call last):
  File "D:/Python31/pycharm/NEW/��������.py", line 10, in <module>
    content = urllib2.urlopen(url).read()
  File "D:\python27\Python27\lib\urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "D:\python27\Python27\lib\urllib2.py", line 435, in open
    response = meth(req, response)
  File "D:\python27\Python27\lib\urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "D:\python27\Python27\lib\urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "D:\python27\Python27\lib\urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "D:\python27\Python27\lib\urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 403: Forbidden

Process finished with exit code 1


一直出现这样的错误，求大神指点迷津