django.test.client import Client gives django_settings_module not specified problem

django.test.client import proble,

import django
import httplib2
import time,urlparse,urllib
from django.conf import settings
import oauth2 as oauth


from django.test.client import Client

CONSUMER_KEY = '123123123'
CONSUMER_SECRET = 'abcabcabc'


REQUEST_TOKEN_URL = 'http://localhost:8000/oauth/request_token/'
AUTHORIZE_URL = 'http://localhost:8000/oauth/authorize/?oauth_token='
ACCESS_TOKEN_URL = 'http://localhost:8000/oauth/access_token/'

#parameters = {'oauth_consumer_key': CONSUMER_KEY,'oauth_signature_method': 'PLAINTEXT','oauth_signature': '%s&' %CONSUMER_SECRET,'oauth_timestamp': str(int(time.time())),'oauth_nonce':'requestnonce','oauth_version': '1.0','oauth_callback': 'http://localhost:8000','scope':'customer',}
c = Client()

parameters = {'oauth_consumer_key': CONSUMER_KEY,'oauth_signature_method': 'PLAINTEXT','oauth_signature': '%s&' % CONSUMER_SECRET,'oauth_timestamp': str(int(time.time())),'oauth_nonce': 'requestnonce','oauth_version': '1.0','oauth_callback': 'http://localhost:8000','scope': 'offer',}

params = urllib.urlencode(parameters)
#resp, content = client.request('http://localhost:8000/oauth/request_token','GET',params)
#c= httplib2.Http()
#c = Client()
#content=urllib.urlopen('http://localhost:8000/oauth/request_token/',parameters ).read()
#resp, content = c.request('http://localhost:8000/oauth/request_token/',params)
#response,content = client.request(REQUEST_TOKEN_URL, parameters)
response = c.get('http://localhost:8000/oauth/request_token/',parameters)
print response
#print content
accessDict = dict(urlparse.parse_qsl(content))

print accessDict
#request_token = accessDict['oauth_token']
#request_token_secret = accessDict['oauth_token_secret']

print 'The request token for you is    ' + request_token 

print 'Please go to this url and authorize' + AUTHORIZE_URL + request_token

accepted = 'n'
while accepted.lower() == 'n':
  accepted = raw_input('Have you authorized me?()y/n')
oauth_verifier = raw_input('what is the verifier')

c = Client()
parameters = {'oauth_consumer_key': CONSUMER_KEY,'oauth_token': request_token,'oauth_signature_method': 'PLAINTEXT','oauth_signature': '%s&%s' % (CONSUMER_SECRET, request_token_secret),'oauth_timestamp': str(int(time.time())),'oauth_nonce': 'accessnonce','oauth_version': '1.0','oauth_verifier': oauth_verifier,'scope': 'offer',}


response,content = client.request(ACCESS_TOKEN_URL,parameters,'GET')
accessDict = dict(urlparse.parse_qsl(content))
access_token = accessDict['oauth_token']
access_token_secret = accessDict['oauth_token_secret']


print 'The request token for you is    ' + access_token