Python 3.10 is a version of the Python programming language, created and maintained by the Python Software Foundation. It was released on October 4, 2021, as the newest major release at the time, incorporating new features and optimizations. Note that Python 3.10.0 has been superseded by Python 3.10.19. As of October 9, 2025, the most recent version is Python 3.10.19.
Key features of Python 3.10 include structural pattern matching (a form of switch-case statement), parenthesized context managers for cleaner code, improved and more precise error messages to help with debugging, and new type union operators for more concise type annotations. It also has features that were added to improve the information provided to static type checkers. Additionally, Python 3.10 includes performance improvements such as faster constructors for str(), bytes(), and bytearray().
As an open-source language, Python 3.10 is available for free download and use.
