livepython: Visually trace Python code in real-time
Livepython is a desktop app that lets you visually trace, in real-time, the execution of a Python program. In addition, it can track changes in global and local variables as your program is running. It is meant to give you a quick grasp of a program’s execution flow. It’s less messy than sprinkling print statements throughout your code and simpler to use than debuggers/profilers.
It can be launched from the command-line as easily as:
livepython [program] [args...]
SPACE: Play/Pause the program.
Left/Right Arrow: Change speed of execution.
V: Open/Close Variable Inspector.
Python 2.7, 3.5, & 3.6.
npm install livepython -g
It has 3 main components:
- a Python tracer that uses sys.settrace() to intercept every line of your program as it’s being evaluated
- an Electron app that is responsible for the rendering the Livepython frontend
- a node.js gateway script that manages communication between the frontend and the tracer
If you want to make changes to Livepython, you will need to run webpack:
Then you can test your built version of livepython by running:
bin/livepython [your python program]
Copyright (c) 2017 Anastasis Germanidis