Requests is a widely-used Python HTTP library that provides a simple, elegant API for making HTTP/1.1 requests. It abstracts away the complexities of urllib3, offering features like session persistence, cookie handling, automatic content decoding, SSL/TLS verification, and various authentication mechanisms (Basic, Digest, OAuth via extensions). The library is designed as a set of loosely coupled modules: the public API (api.py) delegates to a Session object (sessions.py) which manages connection pooling and request defaults; the HTTPAdapter (adapters.py) bridges to urllib3; and models.py defines Request, PreparedRequest, and Response objects. The codebase is well-structured, extensively tested, and follows a feature-freeze policy, focusing on stability and compatibility rather than new features. It is not an application or data research project; it is a pure library distributed via PyPI.