Merge pull request optuna#5861 from himkt/mypy-pyproject

RFC: move mypy related entries in setup.cfg to pyproject.toml

pyproject.toml

@@ -166,3 +166,19 @@ markers = [
   "skip_coverage: marks tests are skipped when calculating the coverage",
   "slow: marks tests as slow (deselect with '-m \"not slow\"')",
 ]
+
+[tool.mypy]
+# Options configure mypy's strict mode.
+warn_unused_configs = true
+disallow_untyped_calls = true
+disallow_untyped_defs = true
+disallow_incomplete_defs = true
+check_untyped_defs = true
+no_implicit_optional = true
+warn_redundant_casts = true
+strict_equality = true
+extra_checks = true
+no_implicit_reexport = true
+
+ignore_missing_imports = true
+exclude = [".venv", "venv", "build", "docs", "tutorial", "optuna/storages/_rdb/alembic"]

setup.cfg

@@ -7,20 +7,3 @@ ignore =
 max-line-length = 99
 statistics = True
 exclude = .venv,venv,build,tutorial,.asv,docs/visualization_examples,docs/visualization_matplotlib_examples
-
-# This section is for mypy.
-[mypy]
-# Options configure mypy's strict mode.
-warn_unused_configs = True
-disallow_untyped_calls = True
-disallow_untyped_defs = True
-disallow_incomplete_defs = True
-check_untyped_defs = True
-no_implicit_optional = True
-warn_redundant_casts = True
-strict_equality = True
-extra_checks = True
-no_implicit_reexport = True
-
-ignore_missing_imports = True
-exclude = .venv|venv|build|docs|tutorial|optuna/storages/_rdb/alembic