Snippet for "Why Refactoring? How to Refactor/Restructure Python Package?" https://hackernoon.com/why-refactoring-how-to-restructure-python-package-51b89aa91987

__init__decorated.py

"""
in __init__.py
This is where backward compatibility code lives.
This is to ensure the refactored package supports 
old way of import. 
"""
from .constants import CONFIG_NAME, LOGGING_LEVEL
from .helpers import ConfigHelper as _ConfigHelper

@refactored('get_logging_level() is refactored and deprecated.')
def get_logging_level(*args, **kwargs):
    return _ConfigHelper().get_logging_level()
  
@refactored_class('config.ConfigHelper is refactored and deprecated. Please use config.helpers.ConfigHelper')
class ConfigHelper(_ConfigHelper):
    pass