Fix pycodestyle line spacing warnings

openlp/core/lib/__init__.py

@@ -609,4 +609,4 @@ def create_separated_list(string_list):
                                                                                    last=string_list[-1])
     else:
         list_to_string = ''
-    return list_to_string
+    return list_to_string

tests/functional/openlp_core/common/test_i18n.py

@@ -162,6 +162,7 @@ def test_check_same_instance():
 def test_get_language_from_settings():
     assert LanguageManager.get_language() == 'en'
 
+
 def test_get_language_from_settings_returns_unchanged_if_unknown_format():
     Settings().setValue('core/language', '(foobar)')
     assert LanguageManager.get_language() == '(foobar)'

tests/interfaces/openlp_plugins/images/forms/test_choosegroupform.py

@@ -32,6 +32,7 @@ from openlp.core.common.registry import Registry
 from openlp.plugins.images.forms.choosegroupform import ChooseGroupForm
 from tests.helpers.testmixin import TestMixin
 
+
 class TestImageChooseGroupForm(TestCase, TestMixin):
     """
     Test the ChooseGroupForm class
@@ -75,7 +76,6 @@ class TestImageChooseGroupForm(TestCase, TestMixin):
         assert self.form.group_combobox.currentIndex() == 1
         assert self.form.existing_radio_button.isChecked()
 
-
     def test_auto_select_existing_group_on_combo_selection(self):
         """
         Tests that the Existing Group option becomes selected when changing the combobox