cast to float

src/useq/_z.py

@@ -34,7 +34,7 @@ def positions(self) -> Sequence[float]:
         if step == 0:
             return [start]
         stop += step / 2  # make sure we include the last point
-        return list(np.arange(start, stop, step))
+        return [float(x) for x in np.arange(start, stop, step)]
 
     def num_positions(self) -> int:
         start, stop, step = self._start_stop_step()