fix(postprocessor): picker no longer returns gen

src/postprocessor/core/processor.py

@@ -193,6 +193,7 @@ class PostProcessor(ProcessABC):
         moset = set([tuple(x) for x in trap_mother])
         daset = set([tuple(x) for x in trap_daughter])
         picked_set = set([tuple(x) for x in indices])
+
         with h5py.File(self._filename, "a") as f:
             merge_events = f["modifiers/merges"][()]
         multii = pd.MultiIndex(

src/postprocessor/core/reshapers/picker.py

@@ -100,7 +100,7 @@ class Picker(LineageProcess):
             self._log(f"No lineage assignment")
             indices = np.array([])
 
-        return np.array(tuple(map(_str_to_int, x)) for x in indices)
+        return np.array([tuple(map(_str_to_int, x)) for x in indices])
 
     def switch_case(
         self,