I want to ask if it is possible to import 3d-models made by Blender into pygame application-> yes, it is! I found an .obj file laoder: link
But now my Question is, i want to make a game like Diablo 3 or WoW with a large map. Should i make a map at Blender? I did it so far, but i don't know if I can import it and use it easy then as landscape/map? Or is there any other possibilities at pygame to make landscapes/maps? Or should i use another framework and not pygame?
Thank you for the information/help about this!
Firstly: Your link doesn't work ;)
Now then, personally I wouldn't use pygame and python for something like that - I dont think it would be powerfull enough as an interpretted language for something that big - your 3D object loader is probably more for basic models and simple displays (I dont know, as I said your links broken :P )
Asking if there is a better framework is quite broad and everyone will say something different but personally I'm a fan of Unity. It's actually designed for C# programming but you can use Boo, which is pretty similar to python, and it will make your life so much easier in terms of rendering, physics particles... etc :)
Plus there's a terrain sculpting tool for you :)