[issue34768] Add documentation explaining __init__.py in packages

Change by Benito Kestelman : -- title: Add documentation for the purpose of __init__.py in packages -> Add documentation explaining __init__.py in packages ___ Python tracker <https://bugs.python.org/issu

[issue34768] Add documentation for the purpose of __init__.py in packages

New submission from Benito Kestelman : I just learned how to make my own package in python and upload it to pypi. I mainly used the documentation here: https://packaging.python.org/tutorials/packaging-projects/ Other than the toy example, there is no explanation of __init__.py, its purpose