Module Not Found – No Module Named

Certainly! The __init__.py file serves as an indicator to Python that a directory should be treated as a package, allowing you to organize your code into modules and submodules. Here’s how you can create the directory structure you mentioned:

1. Create an empty file named __init__.py under the model directory.
2. Place your Python script (hello-world.py) and any other module files (such as order.py) inside the appropriate directories.

Your directory structure would look something like this:

.
└── project
    └── src
    	├── hello-world.py
    	└── model
        	├── __init__.py  # This is an empty file
        	└── order.py

In hello-world.py, you can import SellOrder from the order.py module like this:

from model.order import SellOrder

def main():
	order = SellOrder()
	order.process()

if __name__ == "__main__":
	main()

And in order.py, you might define the SellOrder class:

class SellOrder:
	def __init__(self):
    	pass

	def process(self):
    	print("Processing sell order...")
    	# Additional logic for processing sell orders

With this structure, Python recognizes the model directory as a package, allowing you to import modules and classes from within it using dot notation, as shown in the import statement (from model.order import SellOrder).