The InfluxDB 3.0 Python CLI is a bolt-on application that leverages the new Flight endpoint and uses the client library as its core development component. It provides a data browsing tool with interactive REPL capabilities, allowing users to query and write data in various formats such as SQL, InfluxQL, and CSV. The CLI also supports writing data to InfluxDB using line protocol and has an experimental feature that utilizes ChatGPT for generating InfluxQL queries. The future development of the Python CLI aims to improve OpenAI functionality, find better packaging and distribution methods, extend write functionality, provide post-query exploration support, integrate delta sharing, and more.