Fixed linting errors

src/aihwkit/inference/compensation/drift.py

@@ -12,6 +12,8 @@
 
 """Global drift compensation for inference."""
 
+from typing import Tuple
+
 from torch.autograd import no_grad
 from torch import abs as torch_abs
 from torch import clamp, Tensor, eye

src/aihwkit/simulator/tiles/inference.py

@@ -109,7 +109,7 @@ def init_mapping_scales(self) -> None:
 
     @no_grad()
     def _forward_drift_readout_tensor(
-        self, reset_if: bool = False, is_perfect=False
+        self, reset_if: bool = False, is_perfect: bool = False
     ) -> Optional[Tensor]:
         """Perform a forward pass using the drift read-out tensor.