Add relative path stuff

python.md

@@ -27,3 +27,8 @@
 ## Make some local module available to another module
 > Useful for developing a plugin
 - Create symlink to that moduel in `.venv/lib/python3.11/site-packages/`
+
+## Paths
+### Use paths that are relative to the source file
+- Define `BASE = Path(__file__).parent.resolve()`
+- Define all paths relative to `BASE`: `BASE / "bla.bla"`