Import error

How can I solve this? I followed the step by step tutorial

$ python ./runserver.py --help

Traceback (most recent call last):
File "./runserver.py", line 10, in
import requests
File "/usr/local/lib/python2.7/site-packages/requests/init.py", line 61, in
from .packages.urllib3.exceptions import DependencyWarning
File "/usr/local/lib/python2.7/site-packages/requests/packages/init.py", line 29, in
import urllib3
ImportError: No module named urllib3