Parenthesize the and subexpression in an expression that also contain…

…s or, as suggested by the new ruff rule RUF021

rbnicsx/_backends/tensors_array.py

@@ -253,9 +253,9 @@ def __getitem__(  # type: ignore[no-any-unimported]
             Tensor at position `key` if `key` is an integer, otherwise TensorsArray obtained by
             storing every element at the indices in the slice `key`.
         """
-        if isinstance(key, int) or isinstance(key, tuple) and all([isinstance(key_, int) for key_ in key]):
+        if isinstance(key, int) or (isinstance(key, tuple) and all([isinstance(key_, int) for key_ in key])):
             return self._array[key]
-        elif isinstance(key, slice) or isinstance(key, tuple) and all([isinstance(key_, slice) for key_ in key]):
+        elif isinstance(key, slice) or (isinstance(key, tuple) and all([isinstance(key_, slice) for key_ in key])):
             output_array = self._array[key]
             output = self.duplicate(output_array.shape)
             output._array = output_array