$ ./sage --gdb test.py
/home/volker/Sync/git/sage/local/share/gdb/python/gdb/__init__.py:23: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
  from imp import reload
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"/home/volker/.pyenv/shims/python": not in executable format: file format not recognized
Traceback (most recent call last):
  File "<string>", line 11, in <module>
  File "/home/volker/.pyenv/versions/3.8.1-debug/lib/python3.8/site-packages/Cython/Debugger/libcython.py", line 60, in <module>
    from Cython.Debugger import libpython
  File "/home/volker/.pyenv/versions/3.8.1-debug/lib/python3.8/site-packages/Cython/Debugger/libpython.py", line 1945, in <module>
    import tempfile
  File "/home/volker/.pyenv/versions/3.8.1-debug/lib/python3.8/tempfile.py", line 45, in <module>
    from random import Random as _Random
  File "/home/volker/.pyenv/versions/3.8.1-debug/lib/python3.8/random.py", line 41, in <module>
    from math import log as _log, exp as _exp, pi as _pi, e as _e, ceil as _ceil
ImportError: /home/volker/.pyenv/versions/3.8.1-debug/lib/python3.8/lib-dynload/math.cpython-38d-x86_64-linux-gnu.so: undefined symbol: PyFloat_Type
/tmp/tmppfahgne0:19: Error in sourced command file:
Error while executing Python code.
/home/volker/Sync/git/sage/src/bin/sage-gdb-commands:1: Error in sourced command file:
No executable file specified.
Use the "file" or "exec-file" command.
(gdb)