how to fix "No module named blug_server"?

hi.

as3:~/blug# blug.py post 'test1'
Traceback (most recent call last):
File "/usr/local/bin/blug.py", line 12, in
import blug_server
ImportError: No module named blug_server
as3:~/blug# pip install blug
Requirement already satisfied (use --upgrade to upgrade): blug in /usr/local/lib/python2.7/site-packages
Cleaning up...
as3:~/blug# pip install blug_server
Downloading/unpacking blug-server
Could not find any downloads that satisfy the requirement blug-server
Cleaning up...
No distributions at all found for blug-server
Storing complete log in /root/.pip/pip.log
as3:~/blug#