module has no attribute

Question

I have a directory with a number of .py files in it. each file defines some classes. I also have an empty __init__.py in the directory.

For example:

myproject     __init__.py     mymodule         __init__.py         api.py         models.py         views.py 

I am trying to import mymodule and access the classes defined in all these files:

from myproject import mymodule  print mymodule.api.MyClass  

It gives me an error saying that mymodule has no attribute api. Why? And why I can access just one of the files (models.py) and not the others?

In [2]: dir(banners) Out[2]: ['__builtins__',  '__doc__',  '__file__',  '__name__',  '__package__',  '__path__',  'models'] 

Answer 1

The problem is submodules are not automatically imported. You have to explicitly import the api module:

import myproject.mymodule.api print myproject.mymodule.api.MyClass 

If you really insist on api being available when importing myproject.mymodule you can put this in myproject/mymodule/__init__.py:

import myproject.mymodule.api 

Then this will work as expected:

from myproject import mymodule  print mymodule.api.MyClass  

Answer 2

If you are an idiot, like me, then also check whether you didn't name your python file the same as the module you are trying to import.