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Description of problem:
python-ply must be updated to make the package FIPS compliance. The package uses MD5 to generate the signature of the grammar. With the update either the signature changes or both the signature and the yacc tabversion. Either way the pycparser's yacctab will become outdated and must be regenerated with updated ply.

Version-Release number of selected component (if applicable):
python-pycparser-2.14-14.el8

How reproducible:
Always (with updated ply)

Steps to Reproduce:
$ python3
>>> import pycparser
>>> pycparser.CParser().parse("")

Actual results:
WARNING: yacc table file version is out of date


Expected results:
No warning

Additional info:

I fixed python-ply compatibility issue in #1747490 with new patch build python-ply-3.9-8.el8 instead of a rebase. It is not necessary to rebuild pycparser.