<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] >I am a new learner of Python Programming Language. > Now. I am reading a book.
... > ========== > I was wonderring ... what is the __init__.py used for ? > This question may seems to be stupid for an expert. > But, if you can give the answer, it will be helpful for me. __init__.py is used for two things. One is as a flag to indicate that the python programs in the directory are part of a module. The other is as the module itself. Let's take a simple example. Assume you have a directory named breakfast which contains modules named spam.py, eggs.py, toast.py and jam.py, and that the directory containing breakfast is on the PYTHONPATH. If it try to import spam.py by writing import breakfast.spam it won't work because the breakfast directory doesn't contain an __init__.py file. If I then add __init__.py to the breakfast directory, the import will work, and the result will be *two* modules loaded. The first module will be bound to the identifier 'breakfast' in your module. It will be completely empty except for the identifier 'spam' which will have the spam module bound to it. This means that if the spam module contains, for example, an identifier named "vikings", then I can refer to it as breakfast.spam.vikings. The real kicker here is that when I say that the first module will be completely empty, it's not quite true. First, it will have some standard identifiers that all modules have, and second it will have anything you put into the __init__.py module file. This last is an advanced feature, and you're well advised to stay away from it until you've got a lot more experiance. HTH John Roth > > thanks. > -- http://mail.python.org/mailman/listinfo/python-list
