问题:

>import tensorflow

>import tensorflow.contrib

>tensorflow.contrib

module 'tensorflow.contrib' from 'D:\\ProgramData\\Anaconda3\\lib\\site-packages\\tensorflow\\contrib\\__init__.py'

>import tensorflow.python

>tensorflow.python

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: module 'tensorflow' has no attribute 'python'

As you can see, I run this code in a cmd(win 10). Both "import tensorflow.contrib" and "import tensorflow.python" are OK, but commands "tensorflow.contrib" and "tensorflow.python" are different. One returns a directory and the other returns AttributeError.

Does anyone have a clue why?

回答1:

tensorflow.__init__() explicitly deletes its reference to the tensorflow.python module after importing everything from it.

The reason for that is to provide access to the submodules contained in the python oackage in the toplevel tensorflow namespace. A few things from the tensorflow.core package are also imported and made available in the tensorflow namespace.

I think that the idea is not to import tensorflow.python directly. Those classes, objects, and submodules of python that are intended to be used by applications are made available simply by import tensorflow.