Error when running example program

[padawanphysicist]

Hi,

Thanks for developing this module!

I'm currently using the following setup:

Linux 5.10.76-gentoo-r1-x86_64 #1 SMP Mon Nov 22 10:44:28 -03 2021
guile (GNU Guile) 3.0.7.15-d79a2
Python 3.9.8

When running the script within the README I've got this error:

Backtrace:
In ice-9/boot-9.scm:
  1752:10  7 (with-exception-handler _ _ #:unwind? _ # _)
In unknown file:
           6 (apply-smob/0 #<thunk 7f870f7c6d00>)
In ice-9/boot-9.scm:
    724:2  5 (call-with-prompt _ _ #<procedure default-prompt-handle…>)
In ice-9/eval.scm:
    619:8  4 (_ #(#(#<directory (guile-user) 7f870f7c1c80>)))
In ice-9/boot-9.scm:
   2836:4  3 (save-module-excursion _)
  4388:12  2 (_)
In python/eval.scm:
      9:2  1 (_)
In python/core/type.scm:
    107:5  0 (python->scm _)

python/core/type.scm:107:5: In procedure python->scm:
An exception of <class 'ImportError'> reported by python:
/usr/lib/python3.9/lib-dynload/math.cpython-39-x86_64-linux-gnu.so: undefined symbol: PyFloat_Type

I've checked that the some modules (like math or numpy, which I have installed) imported by python-import-module return a NULL pointer:

scheme@(guile-user)> (use-modules (python core libpython))
scheme@(guile-user)> (use-modules (python core type))
scheme@(guile-user)> (use-modules (python eval))
scheme@(guile-user)> (python-initialize)
scheme@(guile-user)> (python-initialized?)
$1 = #t
scheme@(guile-user)> (python-import-module "os")
$2 = #<pointer 0x7fa8b62eef40>
scheme@(guile-user)> (python-import-module "sys")
$3 = #<pointer 0x7fa8b633d7c0>
scheme@(guile-user)> (python-import-module "math")
$4 = #<pointer 0x0>
scheme@(guile-user)> (python-import-module "numpy")
$5 = #<pointer 0x0>
scheme@(guile-user)>

Can someone give me some light to understand what's happening here?