Configure mypy to install dependencies in CI and update pyproject.toml

.github/workflows/code-checks.yml

@@ -14,8 +14,8 @@ jobs:
       - uses: actions/setup-python@v2
         with:
           python-version: 3.9
-      - name: Install mypy
+      - name: Install dependencies
         run: |
-          grep mypy requirements/test.txt | xargs -0 pip install
+          pip install '.[dev]'
           pip list
       - run: mypy --install-types --non-interactive

pytorch_lightning/trainer/connectors/logger_connector/result.py

@@ -280,8 +280,8 @@ def wrapped_func(*args: Any, **kwargs: Any) -> Optional[Any]:
                 )
 
             # return cached value
-            if self._computed is not None:  # type: ignore
-                return self._computed  # type: ignore
+            if self._computed is not None:
+                return self._computed
             self._computed = compute(*args, **kwargs)
             return self._computed