ModuleNotFoundError: No module named 'com'

[aleksg]

Hello. I have a simple class and a simple test.
I've created packages com.my.pack and class My1.py

class My1:
      val1="ABC"
      val2=12345

      def init(self):
            print("init class My1")

And I've created class TestMy1.py

from com.my.pack import My1

class TestMy1:
      my1 = My1()

When I'm trying to run a test the exception occurs

Error:
from com.my.pack import My1
ModuleNotFoundError: No module named 'com':

What is the problem?