Python 3 is a high-level programming language known for its readability and simplicity. Released in 2008, it is the successor to Python 2 and includes many improvements, such as better support for Unicode and a more consistent syntax. Python 3 is widely used in various fields, including web development, data analysis, artificial intelligence, and scientific computing. One of the key features of Python 3 is its extensive standard library, which provides modules and functions for tasks like file handling, web scraping, and data manipulation. Additionally, Python 3 supports multiple programming paradigms, including procedural, object-oriented, and functional programming, making it versatile for developers.