Getting started

Create the baseline (it will be stored in mypy-baseline.txt by default):

mypy | mypy-baseline sync

After that, you can pipe mypy output into mypy-baseline filter, and it will filter out all issues that are already in the baseline:

mypy | mypy-baseline filter

If you introduce new errors, resolve them. If you resolve existing errors, run mypy-baseline sync again to re-generate baseline. In both cases, mypy-baseline will tell you what’s wrong and what to do. Enjoy the ride!

Read more in the documentation: