installation error by using python 3.9

[MohammadMohammadidoust]

Hi. I have tried to install the package.
I faced an error during compilation:

lhapdf.cpp: In function 'PyObject* PyInit_lhapdf()':
lhapdf.cpp:16683:26: error: 'PyTypeObject' {aka 'struct _typeobject'} has no member named 'tp_print'
16683 | __pyx_type_6lhapdf_PDF.tp_print = 0;

I guess it's because of python3.9 .
how can I fix this problem?
thanks