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

Add type hints for LineRequest'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/20241114145116.2123714-11-vfazio@xes-inc.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

diff --git a/bindings/python/gpiod/line_request.py b/bindings/python/gpiod/line_request.py
index 0846e6bcb8705db7758a241b6d5826c642c88923..f8bbf643fb3bee53bf8e27bc42c45789b32f0318 100644 (file)
--- a/bindings/python/gpiod/line_request.py
+++ b/bindings/python/gpiod/line_request.py
@@ -34,7 +34,12 @@ class LineRequest:
         LineRequest objects can only be instantiated by a Chip parent. This is
         not part of stable API.
         """
-        self._req = req
+        self._req: Union[_ext.Request, None] = req
+        self._chip_name: str
+        self._offsets: list[int]
+        self._name_map: dict[str, int]
+        self._offset_map: dict[int, str]
+        self._lines: list[Union[int, str]]
 
     def __bool__(self) -> bool:
         """