| Issue | Patch | |-------|-------| | | Updated OpenSSL bindings to mitigate a potential buffer‑overflow in ssl.SSLContext.load_verify_locations . | | pickle hardening | Added a warning when loading untrusted pickles from network sockets (experimental flag). | | hashlib | Default to the more secure SHA‑3 family for hashlib.pbkdf2_hmac when no algorithm is supplied. |
A basic Just-In-Time (JIT) compiler was added to provide modest performance improvements, laying the groundwork for more substantial speed gains in future versions. python 3.13.1 release notes november 2025
The typing module, which provides support for type hints and static type checking, has also been improved. Python 3.13.1 introduces a new type hinting system, making it easier for developers to write type-safe code and take advantage of static type checkers like mypy . | Issue | Patch | |-------|-------| | |