GitHub Labels#

We’re using labels on GitHub to categorize issues and pull requests. Many labels are shared for both use cases, while some are dedicated only to one. Below is a possibly inexhaustive list, but it should get you going. For a full list, see here.

General purpose labels#


Used for issues/PRs that address unintentional behavior, but do not pose significant security concerns. Generally, bugfixes will be attached to a specific issue where the unintended behavior was first reported.


Used for issues/PRs that exclusively involve changes to the documentation. Documentation includes *.rst files, docstrings, and code comments.


Used for issues/PRs that provide additional functionality or capabilities beyond the existing specifications.


Used for issues/PRs that provide performance optimizations.


Used for issues/PRs that involve critical security issues. Less severe security concerns can instead use the type-bugfix label.


Used for issues/PRs that exclusively involve changes to the tests.

OS-Mac / OS-Windows

Used for issues/PRs involving changes which only have an effect upon a specific operating system.


Used for issues/PRs that don’t include enough eggs or bacon.

Labels specific to issues#



The highest priority of an issue. If unaddressed, will cause the release manager to hold releasing a new version of Python.


A release blocker that was pushed one or more releases into the future. Possibly a temporary workaround was employed, or the version of Python the issue is affecting is still in alpha or beta stages of development.



Used for issues involving Python modules in the Lib/ dir.


Used for issues involving documentation in the Doc/ dir.


Used for issues in interpreter core (Objects/, Python/, Grammar/, and Parser/ dirs).


Used for issues involving C modules in the Modules/ dir.


Used for issues involving only Python’s regression test suite, i.e. files in the Lib/test/ dir.



Denotes that the issue hasn’t been looked at by triagers or core developers yet.


Denotes that the issue is a good candidate for a newcomer to address.

Labels specific to PRs#


Used on PRs to prevent miss-islington from being able to automatically merge the pull request. This label is appropriate when a PR has a non-trivial conflict with the branch it is being merged into.


Used for PRs which involve changes to the asyncio module or other asynchronous frameworks that utilize it.


Used manually for PRs that do not meet basic requirements and automatically added by bedevere when PR authors attempt to merge maintenance branches into the main branch. During events such as the October Hacktoberfest, this label will prevent the PR from counting toward the author’s contributions.

needs backport to X.Y

Used for PRs which are appropriate to backport to branches prior to main. Generally, backports to the maintenance branches are primarily bugfixes and documentation clarifications. Backports to the security branches are strictly reserved for PRs involving security fixes, such as crashes, privilege escalation, and DoS. The use of this label will cause miss-islington to attempt to automatically merge the PR into the branches specified.

skip issue

Used for PRs which involve trivial changes, such as typo fixes, comment changes, and section rephrases. The majority of PRs require an issue to be attached to, but if there are no code changes and the section being modified retains the same meaning, this label might be appropriate.

skip news

Similar to the skip issue label, this label is used for PRs which involve trivial changes, backports, or already have a relevant news entry in another PR. Any potentially impactful changes should have a corresponding news entry, but for trivial changes it’s commonly at the discretion of the PR author if they wish to opt-out of making one.


Used for PRs authored during an in-person sprint, such as at PyCon, EuroPython, or other official Python events. The label is used to prioritize the review of those PRs during the sprint.


Used for PRs that include changes which are no longer relevant, or when the author hasn’t responded to feedback in a long period of time, or when the reviewer is unresponsive. This label helps core developers quickly identify PRs that are candidates for closure or require a ping to the author or reviewer.

awaiting review

Used for PRs that haven’t been reviewed by anyone yet.

awaiting core review

Used when the PR is authored by a core developer or when a non-core developer has reviewed the PR, even if they requested changes. Note that reviewers could have been added manually by a triager or core developer, or included automatically through use of the CODEOWNERS file.

awaiting changes

A reviewer required changes to proceed with the PR.

awaiting change review

The PR author made requested changes, and they are waiting for review.

awaiting merge

The PR has been approved by a core developer and is ready to merge.


Used on PRs to test the latest commit with the buildbot fleet. Generally for PRs with large code changes requiring more testing before merging. This may take multiple hours to complete. Triagers can also stop a stuck build using the web interface.