What is the most efficient way to detect file changes for adding / removing / renaming a directory in Python?

Question

If I have a table representing the paths and sizes of files / subdirectories inside directory A, how can I detect recursive changes in directory A so that I can efficiently update the table?

Answer 1

I am using watchdog , which is a python library for this kind of thing. If you want to know how they do it, you can dive into the source code of the project.

Answer 2

If you are using linux, use pyinotify