Not sure about goal but here's a step-by-step guide:

1. Set up your Python environment: Make sure you have Python installed on your system. You can download and install the latest version of Python from the official Python website (https://www.python.org/).

2. Create a new Python project: Set up a new directory for your Python package. This directory will contain the necessary files and folders for your package.

3. Define the package structure: Inside your project directory, create a folder with the name of your package (e.g., `nneten`). Inside the package folder, create the following files:

- `__init__.py`: This file makes the `nneten` folder a Python package.

- `nneten.py`: This file will contain the implementation of the NNetEn calculation.

4. Implement NNetEn calculation: Open `nneten.py` and define the necessary functions and classes to perform the NNetEn calculation based on the described methodology. This may involve importing relevant libraries, implementing entropy calculation algorithms, and any other required components.

5. Package documentation: Create a `README.md` file in your project directory to provide instructions and documentation for using your Python package. Include details about the NNetEn calculation method, usage examples, and any other relevant information.

6. Package installation: To make your package installable, create a `setup.py` file in your project directory. The `setup.py` file should contain information about your package, such as its name, version, author, dependencies, and other relevant details. You can refer to the official Python documentation on packaging for more information on creating a `setup.py` file.

7. Test your package: Create a separate directory for testing your package. Write appropriate unit tests to verify the correctness of your NNetEn calculation implementation. You can use the `unittest` module or any other testing framework of your choice.

8. Package distribution: Once you are satisfied with your package, you can distribute it on platforms like PyPI (Python Package Index) so that others can easily install and use it. Refer to the PyPI documentation for detailed instructions on how to upload and distribute your package.

Good luck

Dear Dr. Mohammad Imam Your comment does not carry a semantic load, it looks like a general instruction for creating a package for Python