[Python] python-mapnik on ubuntu 22.04

I can't use some mapnik comands with python.

I installed python3-mapnik with the command apt install python3-mapnik.

I imported mapnik in python3.10, but when try to use the library, it doesn't work:

import mapnik # ok
mapnik.Projection('+init=epsg:31467') # Any use of projections things
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
RuntimeError: Cannot initialize projection '+init=epsg:31467 ' without proj4 support (-DMAPNIK_USE_PROJ4)


I sawin https://github.com/mapnik/mapnik/blob/master/src/projection.cpp that -DMAPNIK_USE_PROJ4 seems to not be defined, and I don't know if I can change it.

Do you have any idea of how I can use mapnik on python ?

Thank you

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