Community

401 error on twitter streaming API with python

I am using Twitter API and python for grab the streaming data from twitter. then I got the  error 401.

My ubuntu machine time zone is : GMT 5.30, India
My twitter account time zone also: GMT 5.30, India

Please help me to resolve this.
My code is pasted bellow..

-- Thank you

####################################################3
consumer_key = " "
consumer_secret = " "
access_key = " "
access_secret = " "
#Twitter only allows access to a users most recent 3240 tweets with this method
#authorize twitter, initialize tweepy


class StdOutListener(StreamListener):
def on_data(self, data):
print data
return True

def on_error(self,status):
print status


if __name__ == '__main__':
l = StdOutListener()
auth = tweepy.OAuthHandler(consumer_key, consumer_secret)
auth.set_access_token(access_key, access_secret)
stream = Stream(auth,l)
#api = tweepy.API(auth)
stream.filter(track=['car'])

#########################################################