I have lots of precomputed data computed by sage8.9 and before that I rely on. The reason I save that data is that it took a lot of computation time to obtain it. The data is saved as .sobj-files.
Suddenly I get "invalid pickle data"-errors when trying to load some of that data with the new version of sage. (I'm using sage9.1 now.) I am therefore unable to do computations on top of the precomputed data.
I strongly suspect that this issue is due to basing sage9.x on Python3.
How do I convert the data so that I can use it in the new version of sage?
Help is greatly appreciated.
