OpenCV/opencv/samples/gdb/gdbinit

set auto-load local-gdbinit on
set print elements 0
add-auto-load-safe-path /

python
# Update GDB's Python paths with the `sys.path` values of the local
#  Python installation, whether that is brew'ed Python, a virtualenv,
#  or another system python.

# Convert GDB to interpret in Python

import os, subprocess, sys

# Execute a Python using the user's shell and pull out the sys.path (for site-packages)
paths = subprocess.check_output('/usr/bin/python3 -c "import os,sys;print(os.linesep.join(sys.path).strip())"',shell=True).decode("utf-8").split()

# Extend GDB's Python's search path
sys.path.extend(paths)

end


source /your/path/to/mat_pretty_printer.py