diff --git a/src/caosadvancedtools/cfoods/h5.py b/src/caosadvancedtools/cfoods/h5.py
index cbf9d0baefa435b71eeaeefe63a9b018faabe7ea..4e6832f2e96e0950ed99146d4907f1ffb70d8494 100644
--- a/src/caosadvancedtools/cfoods/h5.py
+++ b/src/caosadvancedtools/cfoods/h5.py
@@ -97,7 +97,7 @@ def h5_attr_to_property(val):
 
         # TODO this can eventually be removed
 
-        if(hasattr(val, 'ndim')):
+        if hasattr(val, 'ndim'):
             if not isinstance(val, np.ndarray) and val.ndim != 0:
                 print(val, val.ndim)
                 raise Exception(
diff --git a/unittests/test_base_table_exporter.py b/unittests/test_base_table_exporter.py
index 3b8276cdf947c5b22e829e050295dd47f3cfe9ea..8a65b71aa489f8fca457c0e700452a6dc5956eed 100644
--- a/unittests/test_base_table_exporter.py
+++ b/unittests/test_base_table_exporter.py
@@ -82,13 +82,13 @@ def test_simple_record():
     assert my_exporter.prepare_csv_export(
         delimiter='\t', print_header=True) == "Test_Prop_1\tTest_Prop_2\nbla\tblabla"
     # remove optional entry from info
-    del(my_exporter.info["Test_Prop_2"])
+    del my_exporter.info["Test_Prop_2"]
     assert my_exporter.prepare_csv_export(skip_empty_optionals=True) == "bla"
     assert my_exporter.prepare_csv_export(
         delimiter='\t', print_header=True) == "Test_Prop_1\tTest_Prop_2\nbla\t"
     # reload info, and delete mandatory entry
     my_exporter.collect_information()
-    del(my_exporter.info["Test_Prop_1"])
+    del my_exporter.info["Test_Prop_1"]
     with raises(te.TableExportError) as exc:
         my_exporter.prepare_csv_export()
     assert "Test_Prop_1" in exc.value.msg
@@ -184,7 +184,7 @@ def test_info_collection():
     assert "optional_value" not in my_exporter.info
 
     # now error in mandatory value
-    del(export_dict["optional_value"])
+    del export_dict["optional_value"]
     export_dict["mandatory_value"] = {
         "find_func": "find_function_with_error"
     }