Question about (Python/Orange) Apriori associative algorithm
If Python 3 is an option, Orange 3 features FP-growth in its Orange3-Associate add-on:

pip3 install Orange3-Associate


It's well documented: http://orange3-associate.readthedocs.org/

Apriori due to its slowness and resource requirements, as you'd noticed, really isn't an algorithm to consider anymore.