| Removed Feature | Deprecated since | Replacement | |----------------|----------------|-------------| | cgi module | Python 3.11 | email or multipart (or FastAPI/Flask) | | telnetlib | Python 3.11 | paramiko or subprocess + SSH | | asyncio.coroutine (yield from) | Python 3.10 | async / await | | typing.io / typing.re | Python 3.8 | collections.abc or re directly | | distutils (fully gone) | Python 3.10 | setuptools or pyproject.toml |
from typing import TypedDict, ReadOnly class Point(TypedDict): x: ReadOnly[int] y: int python news today release 3.13 november 2025
If you encounter issues (rare), set the environment variable PYTHON_JIT=0 . 3. Type System: TypedDict Read-Only & TypeIs (PEPs 705, 742) Python’s type system continues its march toward full static verification, with two major additions: 3.1 TypedDict gains ReadOnly (PEP 705) You can now mark dictionary keys as read-only, preventing accidental mutation in type-checked code (Pyright, Mypy 2.0+, Pyre). | Removed Feature | Deprecated since | Replacement
November 2025 – The Python community today celebrates the official release of Python 3.13 , a landmark update that solidifies the language’s position as the undisputed king of developer productivity without sacrificing the raw performance gains initiated by previous versions. November 2025 – The Python community today celebrates
python -m sbom --fail-on-critical to break the build if any critical vulnerability is detected. As with any major release, Python 3.13 removes several long-deprecated features:
The Steering Council chose sub-interpreters over a GIL-less build (still available as --disable-gil for the brave) because sub-interpreters maintain full C-extension compatibility – a critical requirement for the scientific and data science ecosystems (NumPy, Pandas, TensorFlow all work unchanged). Takeaway: For CPU-bound workloads, rewrite your multiprocessing code to use interpreters.Pool . For I/O-bound tasks, asyncio remains king. 2. JIT Compilation Graduates from Experimental (PEP 744) PEP 744 , the Copy-and-Patch JIT compiler introduced as an experiment in Python 3.13 beta, is now enabled by default on x86-64 and ARM64 builds.