Python is increasingly popular in web development and testing due to its simplicity, readability, and a vast ecosystem of frameworks that streamline the development process. In 2023, Python remains the fourth most-used language among developers, highlighted by the Stack Overflow Developer Survey 2022. Python frameworks are categorized into full-stack, micro, and asynchronous types, each offering unique benefits like rapid development, ease of maintaining code, and enhancing performance through concurrent task handling. Popular web development frameworks include Django, known for its rapid development capabilities and security features, and Flask, favored for its simplicity and flexibility. Testing frameworks such as Robot Framework and Pytest are vital for ensuring code quality and functionality, with features like keyword-driven testing and support for various testing types, including unit and functional testing. As Python continues to be a dominant language, selecting the appropriate framework depends on project requirements, community support, and the specific needs of web development and testing projects.