Pyraf problem

[Sapna Mishra]

Dear Sir/Mam, 

I am using python for my astronomy purpose, for that I want to use PyRaf, but strange thing is occurring that pyraf is getting open as a root but out side my root user directory when I am typing pyraf I am getting like; 
No graphics/display possible for this session. 
Tkinter import failed. 
The numpy package is required by PyRAF and was not found. Please visit http://numpy.scipy.org 

I have added bath of pyraf in my bashrc file , I have even downloaded numpy but again it is showing same error. 

Any help will be highly appreciated. 
Thanks and regards, 
***************************************************************************************** 
Sapna Mishra 
JRF 
Aryabhatta Research Institute of Observational Sciences (ARIES) 
Manora Peak 
Nainital-263002 
Uttarakhand (India) 
email: sapna.intell at gmail.com 
sapna at aries.res.in