bindings: python: add type hints for Chip's internal members

Add type hints for Chip's internal members so type checkers can ensure
the code properly constrains to these types and accounts for scenarios
where the values are `None`.

Signed-off-by: Vincent Fazio <vfazio@xes-inc.com>
Link: https://lore.kernel.org/r/20241114145116.2123714-9-vfazio@xes-inc.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/bindings/python/gpiod/chip.py b/bindings/python/gpiod/chip.py
index bf38c7f4210ced9c12529321c67c84e392bf3736..69ea777fa27bb4fa45b57be14727241eb24dd887 100644 (file)
--- a/bindings/python/gpiod/chip.py
+++ b/bindings/python/gpiod/chip.py
@@ -61,8 +61,8 @@ class Chip:
           path:
             Path to the GPIO character device file.
         """
-        self._chip = _ext.Chip(path)
-        self._info = None
+        self._chip: Union[_ext.Chip, None] = _ext.Chip(path)
+        self._info: Union[ChipInfo, None] = None
 
     def __bool__(self) -> bool:
         """