Bug 1312815

Description of problem:
For python 2, the dot_parser of the pydot package does not work with the current version (pyparsing-2.1.0-2.fc23).
The package repo includes a fix for python 3 with also does not seem to work.

Version-Release number of selected component (if applicable):
pydot-1.0.28-7.fc23

How reproducible:
always

Steps to Reproduce:
1. use minimal example from here:
   http://stackoverflow.com/questions/15951748/pydot-and-graphviz-error-couldnt-import-dot-parser-loading-of-dot-files-will
   and save as test.py
2. execut as: python test.py

Actual results:
Couldn't import dot_parser, loading of dot files will not be possible.

Expected results:
The loaded graph

Additional info:
The upstream bug report is at https://github.com/erocarrera/pydot/issues/81 (upstream seems unresponsive, it would be good to fix this in the package for now).
The stackoverflow page also includes a workaround using pyparsing-1.5.7

I have built the package repo master which supposedly includes a fix (for python 3) (http://pkgs.fedoraproject.org/cgit/rpms/pydot.git/commit/?id=8edcd4a2e69a14f59f9bf888c7331ddc58f50217), but still got the same error.

So here is was tested with:
$ python3 test.py 

Validated that it actually uses Python 3 files like this:
$ strace -f -e trace=open python3 test.py 2>&1  | grep pydot
open("/usr/lib/python3.4/site-packages/__pycache__/pydot.cpython-34.pyc", O_RDONLY|O_CLOEXEC) = 3
open("/usr/lib/python3.4/site-packages/pydot.py", O_RDONLY|O_CLOEXEC) = 6
open("/usr/lib/python3.4/site-packages/pydot.py", O_RDONLY|O_CLOEXEC) = 6
  File "/usr/lib/python3.4/site-packages/pydot.py", line 1810, in <lambda>
  File "/usr/lib/python3.4/site-packages/pydot.py", line 1896, in write