Application Migration form Django 1.3 to Django 1.5

I have this Web application made in Django 1.3. And now when I use it
on Django 1.5, it does not work. It give error as no module simple.
So, Is there any migration tool
to make my application work easily on 1.5 version without manually
making lot of changes?
You help will be appreciated.

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Sandeep Kaur
E-Mail: mkaurkhalsa@gmail.com
Blog: sandymadaan.wordpress.com

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