trying to open index.py using Indico software......

[Avnesh Shakya]

hi, 
   please help me...
   I have installed indico software and apache2,when i try to run it using http://indico/index.py,then it's downloading index.py, when i put http://indico,
then it's showing all thing properly,but it's not showing index.py but downloading it.... it's not showing any error, even i have tried error.log..

Please help me, I m unable to get this thing....
Thanks