import packages not work python 3

Question

I create a packages in python 3 and went a try to import this in my main folder this is not work

My architecture like this

--mainFolder
  --__init__.py
  --start.py
  --packages
    --__init__.py
    --file1.py
    --file2.py

when i start my programme with the console like this

python3 start.py

i have this error

    Traceback (most recent call last):
  File "start.py", line 8, in <module>
    from packages import Class1
ImportError: cannot import name 'Class1'

my fist init file in my mainFolder is empty

in my init in my packages i try

1 from .file1 import Class1

2 from . import Class1 from . import Class1

3 from . import file1 from . import file1

in my start.py i try to call my module in many ways

1 from packages import Class1

2 from .packages import Class1

3 from . import Class1 from . import Class1

EDIT

in my packages/file1 my code like this

import time
import sys

Class Class1(objet):

  def run(self):
      print('test')

in a call this file in my start.py like this

Class1().run()

i try this How to import a module from sub directory

this Cannot import modules in Python3 from sub directory

and this Importing module from sub-directory works in Python 2, but not Python 3

I think my file init not load because went i add this

sys.path.append('path/to/my/package')

in import my packages its work but pycharm give me and error each time and not compile the script

Answer 1

As @John Gordon said:

If Class1 is in file1.py then you can import it with

from packages.file1 import Class1

You can also import Class1 into packages/ init .py with

from file1 import Class1

Then import straight from packages

from packages import Class1