pip install setup develop

When working on a Python project, it's common to use external packages and libraries to enhance functionality or streamline development. The pip tool is the de facto package installer for Python, and it offers a convenient way to install and manage dependencies. In a development environment, it's often desirable to have a live link between your codebase and the installed package, allowing changes to take effect immediately without the need for repeated installations.
This is where the pip install -e option comes in handy. The -e flag, short for editable, installs the package in "editable" mode. This means that instead of copying the package files to the site-packages directory, a link is created, allowing changes made to the source code to be immediately reflected in the installed package.
First, let's create a simple Python package. Create a directory for your project and add the necessary files:
Open a terminal, navigate to your project directory, and run the following command:
The dot . indicates the current directory. This command installs your package in editable mode.
Now you can use your package in other Python scripts or projects. Create a script in the project directory:
Run your script:
You should see the output:
Any changes you make to the source code in the my_package directory will be immediately reflected when you run your script again. This makes the development process smoother and more efficient.
That's it! You've successfully set up a Python package using pip install -e for development, allowing you to make changes to your code and see the effects without reinstalling the package.
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