Fedora32/x86_64

[root@destiny10 tmp]# gdb /usr/bin/python3.8 core
...
Core was generated by `python3 ./Pb.py'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f898a02a1d8 in __memchr_sse2 () from /lib64/libc.so.6
Missing separate debuginfos, use: dnf debuginfo-install python3-3.8.3-2.fc32.x86_64
(gdb) where
#0  0x00007f898a02a1d8 in __memchr_sse2 () from /lib64/libc.so.6
#1  0x00007f898982caf0 in ffi_call_unix64 () from /lib64/libffi.so.6
#2  0x00007f898982c2ab in ffi_call () from /lib64/libffi.so.6
#3  0x00007f8989851ef1 in _ctypes_callproc.cold () from /usr/lib64/python3.8/lib-dynload/_ctypes.cpython-38-x86_64-linux-gnu.so
#4  0x00007f898985ba2f in PyCFuncPtr_call () from /usr/lib64/python3.8/lib-dynload/_ctypes.cpython-38-x86_64-linux-gnu.so
#5  0x00007f8989d6c7a1 in _PyObject_MakeTpCall () from /lib64/libpython3.8.so.1.0
#6  0x00007f8989d69111 in _PyEval_EvalFrameDefault () from /lib64/libpython3.8.so.1.0
#7  0x00007f8989d62ec4 in _PyEval_EvalCodeWithName () from /lib64/libpython3.8.so.1.0
#8  0x00007f8989dde109 in PyEval_EvalCodeEx () from /lib64/libpython3.8.so.1.0
#9  0x00007f8989dde0cb in PyEval_EvalCode () from /lib64/libpython3.8.so.1.0
#10 0x00007f8989dff028 in run_eval_code_obj () from /lib64/libpython3.8.so.1.0
#11 0x00007f8989dfe763 in run_mod () from /lib64/libpython3.8.so.1.0
#12 0x00007f8989cea81b in PyRun_FileExFlags () from /lib64/libpython3.8.so.1.0
#13 0x00007f8989cea19d in PyRun_SimpleFileExFlags () from /lib64/libpython3.8.so.1.0
#14 0x00007f8989ce153c in Py_RunMain.cold () from /lib64/libpython3.8.so.1.0
#15 0x00007f8989dd1bf9 in Py_BytesMain () from /lib64/libpython3.8.so.1.0
#16 0x00007f8989fb7042 in __libc_start_main () from /lib64/libc.so.6
#17 0x0000557a1f3c407e in _start ()