diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index f90d31f..ed353c9 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -303,7 +303,7 @@
         "Override the base class - just re-raise EOFError"
         raise EOFError
 
-    
+
 class ModifiedInterpreter(InteractiveInterpreter):
 
     def __init__(self, tkconsole):
diff --git a/Lib/idlelib/ScriptBinding.py b/Lib/idlelib/ScriptBinding.py
index 00f533b..0a92914 100644
--- a/Lib/idlelib/ScriptBinding.py
+++ b/Lib/idlelib/ScriptBinding.py
@@ -149,7 +149,7 @@
 
         If the user has configured IDLE for Autosave, the file will be
         silently saved if it already exists and is dirty.
-        
+
         """
         filename = self.editwin.io.filename
         if not self.editwin.get_saved():
diff --git a/Lib/idlelib/buildapp.py b/Lib/idlelib/buildapp.py
index a67ccea..672eb1e 100644
--- a/Lib/idlelib/buildapp.py
+++ b/Lib/idlelib/buildapp.py
@@ -1,5 +1,5 @@
 #
-# After running python setup.py install, run this program from the command 
+# After running python setup.py install, run this program from the command
 # line like so:
 #
 # % python2.3 buildapp.py build
@@ -10,8 +10,8 @@
 from bundlebuilder import buildapp
 
 buildapp(
-	name="IDLE",
-	mainprogram="idle.py",
-	argv_emulation=1,
-	iconfile="Icons/idle.icns",
+        name="IDLE",
+        mainprogram="idle.py",
+        argv_emulation=1,
+        iconfile="Icons/idle.icns",
 )