Migrate django1.2 project to django1.4
If you're using virtualenv, just create a new virtualenv with the versions of django/python that you want, workon this virtualenv and run your testsuite against it. 
BTW, you might want to be careful with the word 'migration' whilst in a Django context. Migration normally refers to model migrations with South when you're making changes to the tables in the database.
We developed project with django version 1.2 and python 2.4. Now we want to migrate the projects into latest version (Django1.4 and python2.7).
I am very new for migration, Can anyone please advise on this. 
What things do I need to take careof?
Do we need to rewrite all the code again?