CGI-Python Image viewing

[Mix]

I am new to CGI scripting AND Python. What I am trying to do is,
display an image on an html page that has been retrieved from a Postgre
database
using Python (cgi). My problem is : that image that not show up on the page,
regardless of where it is sitting on my html or cgi directory!
(I am running Apache Web server under Redhat 7.0 with the default linux
kernel).
But, I CAN display the image on a plain html page (i.e without the
scripting).

Please help!
Thanks