Ndtyjky

I have an __init__ file in a folder foo/ which import some modules

from a import ClassA

from b import *



__all__ = [s for s in dir() if not s.startswith('_')]

My folder foo/ contains additional .py files

foo/

  a.py  # Contain ClassA

  b.py  # Contain ClassB

  c.py

a import c, so when I import a, it automatically import c and add it to the locals() scope of the __init__, even if c isn't imported in __init__.

I would like the __all__ of my init file to only contains the imports that I explicitly declared in the files (so just ClassA and ClassB). However, c, even if not imported in the __init__ is automatically added.

How can I dynamically compute __all__ to only contains the imports that I explicitly define in my __init__.py. Both locals() or dir() also return other files from the module foo.

Ideally, the solution should be both Py2.7 Py3 compatible.

Of course foo.c will show up in foos locals() once it is imported, that's how python imports work. __all__ is there to allow you to control what from foo import * does, by explicitly listing what should be imported.

So if you want from foo import * to import a and b, your __init__.py only needs to contain:

__all__ = ['a', 'b']

You don't need to import the submodules before that at all, only if you want to add code to your __init__.py that uses them.

So if you want to avoid the redundancy of having to import and add the submodules to __all__, just drop the imports and use __all__ explicitly.