Trouble with importing modules in Python?

Question

Python

Hello, I've run into this problem. There is a directory package/__init__.py, package2.py where package is a folder. Outside this folder, there is also a package1.py file containing the following code:

import package.package2.summa

print(summa(1,2))

and this code is not executed. Can you tell me what is the problem here? Works if I enter like this:
from package.package2 import summa
Thank you.
PS Python 3.5 and here is the screenshot with the error

Answer 1

There is no problem here. You should study the module import mechanism in more detail.

Answer 2

But the answer is already in the question. Use:
This notation:
doesn't work because it imports a function, and the import command imports a module (or package).