Numerical Index Index by Category Process and Meta-PEPs Other Informational PEPs Provisional PEPs (provisionally accepted; interface may still change) Accepted PEPs (accepted; may not be implemented yet) Open PEPs (under consideration) Finished PEPs (done, with a stable interface) Historical Meta-PEPs and Informational PEPs Deferred PEPs (postponed pending further research or updates) Rejected, Superseded, and Withdrawn PEPs Process and Meta-PEPs Other Informational PEPs Provisional PEPs (provisionally accepted; interface may still change) Accepted PEPs (accepted; may not be implemented yet) Open PEPs (under consideration) Finished PEPs (done, with a stable interface) Historical Meta-PEPs and Informational PEPs Deferred PEPs (postponed pending further research or updates) Rejected, Superseded, and Withdrawn PEPs Reserved PEP Numbers This PEP contains the index of all Python Enhancement Proposals, known as PEPs. PEP numbers are assigned by the PEP editors, and once assigned are never changed. The version control history of the PEP texts represent their historical record. PEPs for specialist subjects are indexed by topic . Governance PEPs The PEPS API is a JSON file of metadata about all the published PEPs. Read more here . Numerical Index The numerical index contains a table of all PEPs, ordered by number. Index by Category Process and Meta-PEPs Other Informational PEPs Provisional PEPs (provisionally accepted; interface may still change)

Accepted PEPs (accepted; may not be implemented yet) Open PEPs (under consideration) Finished PEPs (done, with a stable interface) Historical Meta-PEPs and Informational PEPs Deferred PEPs (postponed pending further research or updates) Rejected, Superseded, and Withdrawn PEPs Reserved PEP Numbers I — Informational : Non-normative PEP containing background, guidelines or other information relevant to the Python ecosystem P — Process : Normative PEP describing or proposing a change to a Python community process, workflow or governance S — Standards Track : Normative PEP with a new feature for Python, implementation change for CPython or interoperability standard for the ecosystem More info in PEP 1 . A — Accepted : Normative proposal accepted for implementation A — Active : Currently valid informational guidance, or an in-use process D — Deferred : Inactive draft that may be taken up again at a later time <No letter> — Draft : Proposal under active discussion and revision F — Final : Accepted and implementation complete, or no longer active P — Provisional : Provisionally accepted but additional feedback needed R — Rejected : Formally declined and will not be accepted S — Superseded : Replaced by another succeeding PEP W — Withdrawn : Removed from consideration by sponsor or authors More info in PEP 1 .