Improve code style

lib/ansible/modules/utilities/logic/assert.py

@@ -53,16 +53,16 @@ EXAMPLES = '''
       - "'foo' in some_command_result.stdout"
       - "number_of_the_counting == 3"
 
-# after version 2.7 both 'msg' and 'fail_msg' can customize failing assertion message
-- assert:
+- name: after version 2.7 both 'msg' and 'fail_msg' can customize failing assertion message
+  assert:
     that:
       - "my_param <= 100"
       - "my_param >= 0"
     fail_msg: "'my_param' must be between 0 and 100"
     success_msg: "'my_param' is between 0 and 100"
 
-# please use 'msg' when ansible version is smaller than 2.7
-- assert:
+- name: please use 'msg' when ansible version is smaller than 2.7
+  assert:
     that:
       - "my_param <= 100"
       - "my_param >= 0"

lib/ansible/plugins/action/assert.py

@@ -44,13 +44,13 @@ class ActionModule(ActionBase):
         fail_msg = self._task.args.get('fail_msg', self._task.args.get('msg'))
         if fail_msg is None:
             fail_msg = 'Assertion failed'
-        if not isinstance(fail_msg, string_types):
+        elif not isinstance(fail_msg, string_types):
             raise AnsibleError('Incorrect type for fail_msg or msg, expected string and got %s' % type(fail_msg))
 
         success_msg = self._task.args.get('success_msg')
         if success_msg is None:
             success_msg = 'All assertions passed'
-        if not isinstance(success_msg, string_types):
+        elif not isinstance(success_msg, string_types):
             raise AnsibleError('Incorrect type for success_msg, expected string and got %s' % type(success_msg))
 
         # make sure the 'that' items are a list