[Python] urllib2.HTTPError: HTTP Error 410: Gone

I wrote the following program in python for tweet search in python :

#Importing the modules
import urllib2
import json

screen_name = "wordpress"

url = "https://api.twitter.com/1/statuses/user_timeline.json?screen_name=" + screen_name

data = json.load(urllib2.urlopen(url))

print len(data), "tweets"

for tweet in data:
print tweet['text']


But I got the following errors. I am relatively new in Python.

File "twitter.py", line 9, in <module>
data = json.load(urllib2.urlopen(url))
File "/usr/lib/python2.7/urllib2.py", line 127, in urlopen
return _opener.open(url, data, timeout)
File "/usr/lib/python2.7/urllib2.py", line 410, in open
response = meth(req, response)
File "/usr/lib/python2.7/urllib2.py", line 523, in http_response
'http', request, response, code, msg, hdrs)
File "/usr/lib/python2.7/urllib2.py", line 448, in error
return self._call_chain(*args)
File "/usr/lib/python2.7/urllib2.py", line 382, in _call_chain
result = func(*args)
File "/usr/lib/python2.7/urllib2.py", line 531, in http_error_default
raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 410: Gone


Please help.

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