Add mypy configuration file that ignores existing errors on a per-file and per-error basis

.pre-commit-config.yaml

@@ -85,6 +85,12 @@ repos:
     additional_dependencies:
     - tomli
 
+- repo: https://github.com/pre-commit/mirrors-mypy
+  rev: v1.7.1
+  hooks:
+  - id: mypy
+    exclude: ^docs|^\.jupyter|^\.github
+
 - repo: https://github.com/astral-sh/ruff-pre-commit
   rev: v0.1.9
   hooks:

changelog/2424.trivial.rst

@@ -0,0 +1 @@
+Added an initial configuration for ``mypy` that temporarily ignores existing errors.

docs/plasmapy_sphinx/utils.py

@@ -234,7 +234,7 @@ def find_mod_objs(modname: str, app: Sphinx = None) -> Dict[str, Dict[str, Any]]
             "functions": {"names": []},
             "variables": {"names": []},
         }
-    )  # type: Dict[str, Dict[str, Any]]
+    )
     for name in names_to_search:
         obj = getattr(mod, name)