feat: improve, clean up, and stricten the mypy configuration (#641)

Author: jenstroeger

.pre-commit-config.yaml

@@ -86,7 +86,7 @@ repos:
     language: python
     files: ^src/package/|^tests/
     types: [text, python]
-    args: [--show-traceback, --config-file, pyproject.toml]
+    args: [--config-file, pyproject.toml]
 
 # Check for potential security issues.
 - repo: https://github.com/PyCQA/bandit

pyproject.toml

@@ -140,23 +140,27 @@ skip_gitignore = true
 
 # https://mypy.readthedocs.io/en/stable/config_file.html#using-a-pyproject-toml
 [tool.mypy]
-mypy_path = "src/package/:tests/"
-# exclude=
+# mypy_path =
+# exclude =
 show_error_codes = true
 show_column_numbers = true
+pretty = true
+show_traceback = true
 check_untyped_defs = true
 incremental = false
-strict_equality = true
+strict = true
 warn_return_any = true
 warn_redundant_casts = true
 warn_unreachable = true
 warn_unused_configs = true
 warn_unused_ignores = true
+disallow_any_explicit = true
 disallow_untyped_calls = true
 disallow_untyped_defs = true
 disallow_incomplete_defs = true
 disallow_untyped_decorators = true
-disable_error_code = []
+# disable_error_code =
+# allow_redefinition =
 
 [[tool.mypy.overrides]]
 module = [