weblate/.github/matchers/flake8.json

{
  "problemMatcher": [
    {
      "owner": "flake8",
      "pattern": [
        {
          "code": 4,
          "column": 3,
          "file": 1,
          "line": 2,
          "message": 5,
          "regexp": "^([^:]*):(\\d+):(\\d+): (\\w+\\d\\d\\d) (.*)$"
        }
      ]
    }
  ]
}