[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

dpdata/deepmd/mixed.py

@@ -50,7 +50,9 @@ def to_system_data(folder, type_map=None, labels=True):
     if type_map is not None:
         assert isinstance(type_map, list)
         missing_type = [i for i in old_type_map if i not in type_map]
-        assert not missing_type, f"These types are missing in selected type_map: {missing_type} !"
+        assert (
+            not missing_type
+        ), f"These types are missing in selected type_map: {missing_type} !"
         index_map = np.array([type_map.index(i) for i in old_type_map])
         data["atom_names"] = type_map.copy()
     else:
@@ -75,7 +77,9 @@ def to_system_data(folder, type_map=None, labels=True):
         if index_map is None:
             all_real_atom_types.append(np.reshape(real_atom_types, [nframes, -1]))
         else:
-            all_real_atom_types.append(np.reshape(index_map[real_atom_types], [nframes, -1]))
+            all_real_atom_types.append(
+                np.reshape(index_map[real_atom_types], [nframes, -1])
+            )
         if eners is not None:
             eners = np.reshape(eners, [nframes])
         if labels: