The best way to debug is the one you know and are comfortable to use...

For me, i prefer some gui tool like pycharm or eclipse... 

There is also pdb - python debugger.. can be usefull from terminal/console, and is much faster for expirienced users,
or when you need to debug something directly on server... 

Also, there is a lot of unmentioned debugger tools 
and you have the reedom of choice

Most of python tools are free for both pprivate/commercial use, so , test them and find your favourite

Can you please list some references to follow the details about any of what you listed