OMG. Thanks!
I overlooked this message :(
I've successfully used ply (ZX Basic compiler,
http://zxbasic.net).
I froze the version long ago and stayed on py 2.7 until recently.
Now I'm porting the project (almost done) to py3.5, and found the parsetab.py is being generated always under py 3.5+ (under py2.7 it works ok).
I manage to find the problem, and sent you a pull request. Hope this is ok.
I guess the root cause is related to this change in python 3.3+:
https://docs.python.org/3/whatsnew/3.3.html (Hash randomization is switched on by default)
Again, thanks for developing PLY :)
Regards,
J.