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I am having difficulty understanding the usage scenarios or design goals of python's __init__.py files in my projects. Assume that I have 'model' directory (refers as a package) which contains the following files __init__.py meta.py solrmodel.py mongomodel.py samodel.py I found two ways of using __init__.py : I have common a definition which needs to be used in solrmodel.py , mongomodel.py , samodel.py . Can I use __init__.py as a base/common definition for all the *model.py classes? This means that I have to import model/__init__.py . Or, the __init__.py shall have imported definitions of solrmodel.py, mongomodel.py, samodel.py in its own and it allows the easy import of classes or function like this: # file: __init__.py from mongomodel import * from solrmodel import * from samodel import * (I am aware that import * is not recommended and I just used it as a convention) I could not decide between above two scenarios. Are there more usage scenarios for __init__.py and can you explain the usage?

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