Warnings in console with Python 3.13 coming from the ply/yacc dependencies

[peterlevi]

With Python 3.13, I am getting warnings to stderr when importing luqum, coming from the ply dependency. This was not the case with Python 3.12.

The warnings I see are the following:

    "Generating LALR tables",
    "WARNING: 2 shift/reduce conflicts",
    "WARNING: 2 reduce/reduce conflicts",
    "WARNING: reduce/reduce conflict in state 24 resolved using rule (phrase_or_possibly_negative_term -> PHRASE)",
    "WARNING: rejected rule (phrase_or_term -> PHRASE) in state 24",

The easiest way to reproduce is to run:

docker run --rm --network host python:3.13-alpine3.23 sh -c 'pip install ply==3.11 luqum==1.0.0 && python -c "import luqum.parser;print(luqum)"'

I don't get warnings with Python 3.12:

docker run --rm --network host python:3.12-alpine3.23 sh -c 'pip install ply==3.11 luqum==1.0.0 && python -c "import luqum.parser;print(luqum)"'

Any suggestions how to suppress these?