So I am working on implementing a file structure to my Python and am having an error with doing imports. The file structure looks something like this:

Dirs(Folder)
 ╘ run.py
 Vers(Folder)
 ╘ __init__.py
 1_1(Folder)
 ╘ Main.py
 secondary.py
 __init__.py
 1_2(Folder)
 ╘ Main.py
 secondary.py
 __init__.py

This is the contents of run.py

import importlib
print("This is the main module")
A = importlib.import_module(str("Vers.1_1.Main"))
A.start()
B = importlib.import_module(str("Vers.1_2.Main"))
B.start()

Each Main.py and secondary.py contain code that is the same except for the version number in the print statements, which is changed depending on the version number of the folder they are in.

Main.py
import secondary
class start():
 def __init__(self):
 print("This is version 1.2 main")
 secondary.start()
secondary.py
class start():
 def __init__(self):
 print("This is version 1.1 secondary")

This is the output I get when I execute run.py

This is the main module
Traceback (most recent call last):
 File "Python\Python36-32\lib\importlib\__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
 File "<frozen importlib._bootstrap>", line 978, in _gcd_import
 File "<frozen importlib._bootstrap>", line 961, in _find_and_load
 File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
 File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
 File "<frozen importlib._bootstrap_external>", line 678, in exec_module
 File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
 File "Dirs\Vers1円_1\Main.py", line 1, in <module>
import secondary
ModuleNotFoundError: No module named 'secondary'

So from my understanding, run.py is able to successfully find and attempt to import Main.py from the 1_1 Folder. However, when executing the Main.py file, it is unable to see that secondary.py is in the same directory to import it. I've tried looking for how to fix this problem, but I really don't know what my issue is. Is how I am attempting to set up packages wrong? If so what do I need to change in order to make it work properly?