Tough-cookie provides RFC6265-compliant HTTP cookie parsing and serialization. It's designed for robust cookie handling, essential for applications requiring persistent sessions or complex state management. It supports advanced cookie attributes like domains, paths, and security flags. This makes it a vital dependency for libraries needing reliable cookie persistence across requests and responses, ensuring seamless web scraping and API integration experiences. Key benefits include comprehensive compatibility across diverse server setups and dependable adherence to industry standards.