---
title: "Workflow"
url: https://develop.sentry.dev/development-infrastructure/workflow/
---

# Workflow

You may also be interested in [sentry vs. getsentry](https://develop.sentry.dev/application/sentry-vs-getsentry.md).

## [Testing Sentry commits in Getsentry](https://develop.sentry.dev/development-infrastructure/workflow.md#testing-sentry-commits-in-getsentry)

When you create a PR add `requires <PR link>` to the body of it. The `getsentry/action-get-dependent-pr` github action will pick up this value and update the sentry revision during CI. This is meant as a temporary measure to quickly validate a change -- one should commit backward and forward compatible changes in `sentry` since commits cannot be merged in lockstep.

NOTE: If you notice after opening it, edit the PR body and then push a new commit.

## [Fast reverting a change](https://develop.sentry.dev/development-infrastructure/workflow.md#fast-reverting-a-change)

If a merged PR in `sentry` or `getsentry` needs to be reverted immediately (such as during an incident or to un-break CI) the **`[Trigger: Revert]`** label can be applied to the PR. A GitHub action will process the label and apply the revert directly to the primary branch.

## [Python typechecking](https://develop.sentry.dev/development-infrastructure/workflow.md#python-typechecking)

We're slowly working to add typing to our Python codebase, using `mypy` to check types. While we do that, there are a few useful things to know:

* As you create or work on Python files, please add typing where you can. If possible, try to follow the [Python typing best practices](https://typing.readthedocs.io/en/latest/source/best_practices.html), which may mean you also have to add `from __future__ import annotations` as the first line of your file. For more information about using types in Python, see [the typing docs](https://typing.readthedocs.io/en/latest/index.html).

* Check that the file you're modifying is not on the exclude list from `pyproject.toml`. In other words, you need to opt-in the file for type checking to happen.

* To test types locally, you can run `mypy path/to/file` or just `mypy` to run against all files.

* To automatically run `mypy` during pre-push, export the `SENTRY_MYPY_PRE_PUSH` environment variable set to `1`.