diff --git a/python/pacemaker/_cts/tests/fliptest.py b/python/pacemaker/_cts/tests/fliptest.py
index 0471c062c0..aae3feebcc 100644
--- a/python/pacemaker/_cts/tests/fliptest.py
+++ b/python/pacemaker/_cts/tests/fliptest.py
@@ -1,45 +1,53 @@
-""" Test-specific classes for Pacemaker's Cluster Test Suite (CTS)
-"""
+""" Stop running nodes, and start stopped nodes """
 
 __all__ = ["FlipTest"]
 __copyright__ = "Copyright 2000-2023 the Pacemaker project contributors"
 __license__ = "GNU General Public License version 2 or later (GPLv2+) WITHOUT ANY WARRANTY"
 
 import time
 
 from pacemaker._cts.tests.ctstest import CTSTest
 from pacemaker._cts.tests.starttest import StartTest
 from pacemaker._cts.tests.stoptest import StopTest
 
 
 class FlipTest(CTSTest):
-    '''If it's running, stop it.  If it's stopped start it.
-       Overthrow the status quo...
-    '''
+    """ A concrete test that stops running nodes and starts stopped nodes """
+
     def __init__(self, cm):
-        CTSTest.__init__(self,cm)
+        """ Create a new FlipTest instance
+
+            Arguments:
+
+            cm -- A ClusterManager instance
+        """
+
+        CTSTest.__init__(self, cm)
         self.name = "Flip"
+
         self._start = StartTest(cm)
         self._stop = StopTest(cm)
 
     def __call__(self, node):
-        '''Perform the 'Flip' test. '''
+        """ Perform this test """
+
         self.incr("calls")
+
         if self._cm.ShouldBeStatus[node] == "up":
             self.incr("stopped")
             ret = self._stop(node)
             type = "up->down"
             # Give the cluster time to recognize it's gone...
             time.sleep(self._env["StableTime"])
         elif self._cm.ShouldBeStatus[node] == "down":
             self.incr("started")
             ret = self._start(node)
             type = "down->up"
         else:
             return self.skipped()
 
         self.incr(type)
         if ret:
             return self.success()
         else:
             return self.failure("%s failure" % type)