diff --git a/Lib/idlelib/EditorWindow.py b/Lib/idlelib/EditorWindow.py
index 59440f0..7604293 100644
--- a/Lib/idlelib/EditorWindow.py
+++ b/Lib/idlelib/EditorWindow.py
@@ -649,7 +649,7 @@
     def __extra_help_callback(self, helpfile):
         "Create a callback with the helpfile value frozen at definition time"
         def display_extra_help(helpfile=helpfile):
-            if not (helpfile.startswith('www') or helpfile.startswith('http')):
+            if not helpfile.startswith(('www', 'http')):
                 url = os.path.normpath(helpfile)
             if sys.platform[:3] == 'win':
                 os.startfile(helpfile)
diff --git a/Lib/idlelib/configHandler.py b/Lib/idlelib/configHandler.py
index 191a87c..dcd9321 100644
--- a/Lib/idlelib/configHandler.py
+++ b/Lib/idlelib/configHandler.py
@@ -406,7 +406,7 @@
         names=extnNameList
         kbNameIndicies=[]
         for name in names:
-            if name.endswith('_bindings') or name.endswith('_cfgBindings'):
+            if name.endswith(('_bindings', '_cfgBindings')):
                 kbNameIndicies.append(names.index(name))
         kbNameIndicies.sort()
         kbNameIndicies.reverse()
diff --git a/Lib/idlelib/configHelpSourceEdit.py b/Lib/idlelib/configHelpSourceEdit.py
index 8924f79..6611621 100644
--- a/Lib/idlelib/configHelpSourceEdit.py
+++ b/Lib/idlelib/configHelpSourceEdit.py
@@ -127,7 +127,7 @@
                                    parent=self)
             self.entryPath.focus_set()
             pathOk = False
-        elif path.startswith('www.') or path.startswith('http'):
+        elif path.startswith(('www.', 'http')):
             pass
         else:
             if path[:5] == 'file:':
@@ -146,8 +146,7 @@
                            self.path.get().strip())
             if sys.platform == 'darwin':
                 path = self.result[1]
-                if (path.startswith('www') or path.startswith('file:')
-                    or path.startswith('http:')):
+                if path.startswith(('www', 'file:', 'http:')):
                     pass
                 else:
                     # Mac Safari insists on using the URI form for local files