It may not be obvious to you, but the plpython regression tests

It may not be obvious to you, but the plpython regression tests
include output that vary depending on the python build one is
running. Basically, the order of keys in a dictionary is
non-deterministic, and that part of the test fails for me regularly.

I rewrote the test to work around this problem, and include a patch
file with that change and the change to the expected otuput as well.

Mike Meyer