python-module-split-into-multiple-files

Tips and Tricks - Python - splitting a module into multiple files | TestDriven.io

Refactor from a module (one file) to a package (a folder with multiple files, including __init__.py)
Can keep all imports from the module unchanged by rexporting the imports from package/__init__.py:

❗ Dramatically change this to avoid plagiarism! What did I learn in particular that adds extra value?

Before (single file module):

# models.py
class Order:
    pass
 
 
class Shipment:
    pass

After (multi-file package folder):

# models/__init__.py
from .order import Order
from .shipment import Shipment
 
__all__ = ["Order", "Shipment"]
 
# or...
from . import order
from . import shipment
 
__all__ = ["order", "shipment"]
# though, that would change the imports to order.Order and shipment.Shipment...
 
 
# models/order.py
class Order:
    pass
 
 
# models/shipment.py
class Shipment:
    pass
 
 
# └── models
#     ├── __init__.py
#     ├── order.py
#     └── shipment.py

Imports from the new package are the same as they were from the previous module:

from models import Order, Shipment