To get a very convenient full-screen console debugger for python, install
__import__('ipdb').set_trace() to start the debugger and enter
sticky to switch to the full-screen mode.
Both packages can be installed with pip:
virtualenv -p python3 venv source venv/bin/activate pip install ipdb pip install pdbpp
ipdb package improves the standard (pdb) debugger by adding syntax highlight and code completion.
pdbpp adds the "sticky" mode, so the debugger can be run in a full-screen mode, in terminal:
This way we get an interactive debugging environment where we can execute the code, inspect variables and experiment with the live application state.
It works well for command-line scripts and web applications, the only thing you need is to start the application from terminal in a non-daemon mode, so the debugger can break the execution and switch to the interactive mode.
It also works if the app is started inside the docker container (same here - run in foreground mode, "docker run ..." or "docker-compose run ..." without