Unverified50% confidenceReleaseExact time
Python 3.15 has a built-in immutable mapping, frozen dict, requiring no import, and raises a TypeError when modification is attempted.
1
Sources
50%
Confidence
Long-term
Relevance
10/4/2026
First Seen
Sources
Related Entities
Related Claims
UnverifiedThe built-in frozenset has existed since Python 2.4.76% similarVerifiedPython 3.13 has begun introducing an optional GIL-free mode (Free-threaded Python).72% similarVerifiedPython version 3.13 introduced an experimental free-threaded mode (PEP 703), allowing it to run with the GIL disabled.66% similarUnverified安装 Python 源码时必须使用 altinstall 而非 install，altinstall 只创建带版本号的命令（如 python3.14），不会覆盖系统的 python3 软链接65% similarUnverifiedPython's Global Interpreter Lock (GIL) limits true multi-threaded parallelism; Python 3.13 has begun advancing experimental GIL-free support (PEP 703).65% similar
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