Fix linting

Author: nicoddemus

src/pluggy/_hooks.py

@@ -244,8 +244,11 @@ def varnames(func: object) -> Tuple[Tuple[str, ...], Tuple[str, ...]]:
         except Exception:
             return (), ()
 
-    try:  # func MUST be a function or method here or we won't parse any args
-        sig = inspect.signature(func.__func__ if inspect.ismethod(func) else func)
+    try:
+        # func MUST be a function or method here or we won't parse any args.
+        sig = inspect.signature(
+            func.__func__ if inspect.ismethod(func) else func  # type:ignore[arg-type]
+        )
     except TypeError:
         return (), ()
 

testing/test_helpers.py

@@ -87,12 +87,13 @@ def function4(arg1, *args, **kwargs):
 
 
 def test_varnames_decorator() -> None:
-    F = TypeVar('F', bound=Callable[..., Any])
+    F = TypeVar("F", bound=Callable[..., Any])
 
     def my_decorator(func: F) -> F:
         @wraps(func)
         def wrapper(*args, **kwargs):
             return func(*args, **kwargs)
+
         return cast(F, wrapper)
 
     @my_decorator