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contextvars: PEP 567 ndash; Context Variables

dataclasses: PEP 557 ndash; Data Classes

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PEP 553, Ð嵀 breakpoint() º­Êý

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PEP 562, customization of Access to module attributes.

PEP 560, core support for typing module and generic types.

the insertion-order preservation nature of dict objects has been declared to be an official part of the Python language spec.

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PEP 538, legacy C locale coercion

PEP 540, forced UTF-8 runtime mode

PEP 552, deterministic .pycs

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PEP 565, ¸Ä½ø DeprecationWarning ½â¾ö

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PEP 539, ÓÃÒÔ thread-local ´¢´æµÄÐ嵀 C API

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