An abend like that does not necessarily happen with others. So, only posting the high-level code that triggers it does not mean that much. Hence, it can be a long time until someone experiences the same problem as yours as these mysterious crashes often have a multitude of causes. Python code depends on piles and piles of lower level APIs. The crash can be starting in any of them. If you wish the community to help you, the least you can do is to get human-readable information on the dump following the steps presented and share them here.
If you don’t feel like getting into the trouble of using a debugger to have an inteligible core dump, I believe your options are:
a) waiting;
b) use a work around;
c) hire someone more experienced to do it for you.
Anyway, have you tried a trivial data set? Maybe the crash is caused by some oddity in the data.
take care,
Paulo