How to change Python (while it's running)

on YouTube ↗30m

" summary

Live development of a running Python process by swapping function code objects is practical and implemented as Jurigged which watches files (watchdog), compiles new code in isolation and hot‑patches by updating function __code__ pointers after locating references via gc and the audit hook from Python 3.8. It updates functions methods and closures most of the time and adds a dunder conform protocol for library-specific state patches. Limits include object layout changes, running frames only seeing changes on next call, line‑number and decorator/JIT incompatibilities.

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" chapters (14)

1. 0:00Start
2. 0:55What is live coding?
3. 1:57Existing platforms
4. 3:35We want to update functions
5. 6:01We want to add update methods
6. 7:21We want to update closures
7. 11:30How a function is executed
8. 14:31Patching a function
9. 14:50Plan
10. 17:33Find the old code object (bis)
11. 18:43Find all functions
12. 19:33Profit?
13. 20:33What happens ?
14. 22:41conform_protocol

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