ModuleNotFoundError: No module named 'com'

Python Help
1

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

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6 class My1:

val1 = "ABC"

val2 = 12345

def init( self ):

print ( "init class My1" )

And I’ve created class TestMy1.py

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4 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':