Message 75279 - Python tracker

By visual inspection the intent looks correct, but can't actually test it 
until I can checkout Python code from source repository and apply patch as 
patch doesn't apply cleanly to 3.0rc1.

With #3723 and #4213 now also having patches, will need to sit down and 
look at all of them and see if find any new issues. May take me a couple 
of days to get time.