PEP 849: "More Expressive Type Expressions" - #5132

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ImogenBits wants to merge 25 commits into

python:mainfrom

ImogenBits:ast_format

Commits on Sep 19, 2026

wip
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finish motivation
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headings
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copyright
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rationale
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cleanup
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specification
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backwards compatibility
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security, teach, reference impl
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backwards compatibility
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eval_type
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linting
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fix reference
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wip
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update to new implementation
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rename pep
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fix linting issues
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fix spelling
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update rejected ideas
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annotation functions -> annotate functions
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Commits on Sep 20, 2026

fix PEP header
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incorporate feedback
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add explanations around STRING format and backcompat
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fix spelling/grammar mistakes
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Commits on Sep 21, 2026

Update peps/pep-0849.rst

ImogenBits
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JelleZijlstra
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