A "source folder" is a directory that contains source files. Putting .py files into this directory will make them discoverable by PyDev, so that you can for instance import them from other Python files.
A "PyDev Package" is a Python package. This means that it contains a file called __init__.py
. For example, if you create a new PyDev Package with name foo
, then you will get file foo/__init__.py
. You can place other .py files into foo/
, which you can then import. So, if you place bar.py
into foo/
, then you can do
import foo.bar
This is not possible with source folders.
You normally place packages into source folders. I don't know if it is possible to place a source folder into a package, but even if it were you would hardly ever do it.