python3 gdb使用教程

https://wiki.python.org/moin/DebuggingWithGdb
https://kouk.surukle.me/2014/09/25/debugging-python-objects-and-fields-with-gdb/
# py-fields
https://gist.github.com/fake-name/9ea90ec8551ee2dc3a758921c3853bec

# tested in Debian
apt install python3-dbg gdb -y
gcore <process pid>
gdb python3 <process pid> or <core dump file>

py-{up|down|}
py-{list|locals|print}

# ext py-fields
# run in gdb
source py-fields.py
py-fields self.<attr>