Redirect to www. (with out index.py suffix)

Hi,

I have site running on Flask + Apache mod_wsgi. I need to redirect users from demo.abc.com to www.demo.abc.com I have written the following

.htaccess code.

< IfModule mod_rewrite.c>
< IfModule mod_negotiation.c>
    Options -MultiViews
< /IfModule>
RewriteEngine On
RewriteCond %{HTTP_HOST} ^demo.abc.com$
RewriteRule (.*) http://www.demo.abc.com/$1 [R=301,L]
</IfModule>

With the above code user is redirected from demo.abc.com to www.demo.abc.com/index.py

I hope index.py is suffixed automatically because of the WSGIScriptAlias in the following httpd.conf file.

httpd.conf file (Partial)

WSGIDaemonProcess oh_demo processes=2 threads=12 python-path=/home/arulkumar/webapps/oh_demo/lib/python3.4
WSGIProcessGroup oh_demo
WSGIRestrictEmbedded On
WSGILazyInitialization On

WSGIPythonPath /home/arulkumar/webapps/oh_demo/htdocs/
WSGIScriptAlias / /home/arulkumar/webapps/oh_demo/htdocs/index.py

WSGIScriptAlias /static /home/arulkumar/webapps/oh_demo/core/static

< Directory /home/arulkumar/webapps/oh_demo/htdocs>
Options +ExecCGI
AddHandler wsgi-script .py
RewriteEngine on
RewriteBase /
AllowOverride All
WSGIScriptReloading On
< /Directory>

Can help me out fixing this issue ?