Unverified50% confidenceFactExact time
Python type hints (introduced starting with PEP 484) initially only served static checking tools and IDE completion, and are not enforced at runtime.
1
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50%
Confidence
Long-term
Relevance
10/22/2026
First Seen
Sources
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Related Claims
UnverifiedPython's built-in type hints do not enforce type checking on their own, and no error will be raised at runtime due to type annotation mismatches.75% similarVerifiedPython's type annotation system was introduced by PEP 484 and refined by PEP 526.75% similarVerifiedPython 3.5 introduced Type Hints, which do not affect runtime behavior and can be used with static checking tools such as mypy to catch type errors during development.75% similarUnverifiedPEP 661 在 Python 3.15 中引入了标准化的哨兵对象模式71% similarUnverifiedThe checker is implemented using only the Python standard library, with no additional dependencies introduced.70% similar
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