Setuptools is a widely adopted Python library and a powerful tool designed to help Python developers easily build and distribute Python packages. It builds upon Python’s native packaging capabilities provided by the `distutils` libraries, offering essential features that enable developers to define their project’s attributes, dependencies, and entry points with minimal setup.A core feature of setuptools is the `setup.py` script, which allows creators to specify how their Python packages are built, distributed, and installed. Developers can effortlessly define metadata about their projects, such as name, version, and author, as well as list any project dependencies that must be installed alongside the package.Setuptools streamlines the process of packaging Python software, enabling dependencies management, package versioning, and compatibility handling, making it simpler to distribute Python projects to the PyPI repository (Python Package Index), where they can be easily installed by others using tools like `pip`.