I started writing a very-alpha related tool, https://github.com/czinck/pyset_x. As the name implies, it's like `set -x` in bash, in that it prints every line as it executes. It's more useful for situations where you have some complicated control flow and it's not working exactly how you expect.

"PySnooper is a poor man's debugger. If you've used Bash, it's like set -x for Python, except it's fancier."

https://github.com/cool-RR/PySnooper