diff --git a/Lib/idlelib/ClassBrowser.py b/Lib/idlelib/ClassBrowser.py
index e5a60a5..d3f9048 100644
--- a/Lib/idlelib/ClassBrowser.py
+++ b/Lib/idlelib/ClassBrowser.py
@@ -94,7 +94,7 @@
             return []
         try:
             dict = pyclbr.readmodule_ex(name, [dir] + sys.path)
-        except ImportError, msg:
+        except ImportError as msg:
             return []
         items = []
         self.classes = {}
diff --git a/Lib/idlelib/EditorWindow.py b/Lib/idlelib/EditorWindow.py
index 1841b1c..400c31c 100644
--- a/Lib/idlelib/EditorWindow.py
+++ b/Lib/idlelib/EditorWindow.py
@@ -505,7 +505,7 @@
         # XXX Ought to insert current file's directory in front of path
         try:
             (f, file, (suffix, mode, type)) = _find_module(name)
-        except (NameError, ImportError), msg:
+        except (NameError, ImportError) as msg:
             tkMessageBox.showerror("Import error", str(msg), parent=self.text)
             return
         if type != imp.PY_SOURCE:
diff --git a/Lib/idlelib/GrepDialog.py b/Lib/idlelib/GrepDialog.py
index ab136bc..99d2e4d 100644
--- a/Lib/idlelib/GrepDialog.py
+++ b/Lib/idlelib/GrepDialog.py
@@ -82,7 +82,7 @@
         for fn in list:
             try:
                 f = open(fn)
-            except IOError, msg:
+            except IOError as msg:
                 print msg
                 continue
             lineno = 0
@@ -110,7 +110,7 @@
     def findfiles(self, dir, base, rec):
         try:
             names = os.listdir(dir or os.curdir)
-        except os.error, msg:
+        except os.error as msg:
             print msg
             return []
         list = []
diff --git a/Lib/idlelib/IOBinding.py b/Lib/idlelib/IOBinding.py
index deeb5c5..e23b40c 100644
--- a/Lib/idlelib/IOBinding.py
+++ b/Lib/idlelib/IOBinding.py
@@ -246,7 +246,7 @@
             f = open(filename,'rb')
             chars = f.read()
             f.close()
-        except IOError, msg:
+        except IOError as msg:
             tkMessageBox.showerror("I/O Error", str(msg), master=self.text)
             return False
 
@@ -289,7 +289,7 @@
         # Next look for coding specification
         try:
             enc = coding_spec(chars)
-        except LookupError, name:
+        except LookupError as name:
             tkMessageBox.showerror(
                 title="Error loading the file",
                 message="The encoding '%s' is not known to this Python "\
@@ -380,7 +380,7 @@
             f.flush()
             f.close()
             return True
-        except IOError, msg:
+        except IOError as msg:
             tkMessageBox.showerror("I/O Error", str(msg),
                                    master=self.text)
             return False
@@ -400,7 +400,7 @@
         try:
             enc = coding_spec(chars)
             failed = None
-        except LookupError, msg:
+        except LookupError as msg:
             failed = msg
             enc = None
         if enc:
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index 20d00be..46ef211 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -380,7 +380,7 @@
             try:
                 self.rpcclt = MyRPCClient(addr)
                 break
-            except socket.error, err:
+            except socket.error as err:
                 pass
         else:
             self.display_port_binding_error()
@@ -389,7 +389,7 @@
         self.rpcclt.listening_sock.settimeout(10)
         try:
             self.rpcclt.accept()
-        except socket.timeout, err:
+        except socket.timeout as err:
             self.display_no_subprocess_error()
             return None
         self.rpcclt.register("stdin", self.tkconsole)
@@ -423,7 +423,7 @@
         self.spawn_subprocess()
         try:
             self.rpcclt.accept()
-        except socket.timeout, err:
+        except socket.timeout as err:
             self.display_no_subprocess_error()
             return None
         self.transfer_path()
@@ -1324,7 +1324,7 @@
     startup = False
     try:
         opts, args = getopt.getopt(sys.argv[1:], "c:deihnr:st:")
-    except getopt.error, msg:
+    except getopt.error as msg:
         sys.stderr.write("Error: %s\n" % str(msg))
         sys.stderr.write(usage_msg)
         sys.exit(2)
diff --git a/Lib/idlelib/ScriptBinding.py b/Lib/idlelib/ScriptBinding.py
index 3746eb8..a83f715 100644
--- a/Lib/idlelib/ScriptBinding.py
+++ b/Lib/idlelib/ScriptBinding.py
@@ -66,13 +66,13 @@
         f = open(filename, 'r')
         try:
             tabnanny.process_tokens(tokenize.generate_tokens(f.readline))
-        except tokenize.TokenError, msg:
+        except tokenize.TokenError as msg:
             msgtxt, (lineno, start) = msg
             self.editwin.gotoline(lineno)
             self.errorbox("Tabnanny Tokenizing Error",
                           "Token Error: %s" % msgtxt)
             return False
-        except tabnanny.NannyNag, nag:
+        except tabnanny.NannyNag as nag:
             # The error messages from tabnanny are too confusing...
             self.editwin.gotoline(nag.get_lineno())
             self.errorbox("Tab/space error", indent_message)
@@ -97,7 +97,7 @@
             try:
                 # If successful, return the compiled code
                 return compile(source, filename, "exec")
-            except (SyntaxError, OverflowError), err:
+            except (SyntaxError, OverflowError) as err:
                 try:
                     msg, (errorfilename, lineno, offset, line) = err
                     if not errorfilename:
diff --git a/Lib/idlelib/SearchEngine.py b/Lib/idlelib/SearchEngine.py
index cc40a00..6745faf 100644
--- a/Lib/idlelib/SearchEngine.py
+++ b/Lib/idlelib/SearchEngine.py
@@ -66,7 +66,7 @@
             flags = flags | re.IGNORECASE
         try:
             prog = re.compile(pat, flags)
-        except re.error, what:
+        except re.error as what:
             try:
                 msg, col = what
             except:
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 61364a5..6b29003 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -114,7 +114,7 @@
         try:
             server = MyRPCServer(address, MyHandler)
             break
-        except socket.error, err:
+        except socket.error as err:
             print>>sys.__stderr__,"IDLE Subprocess: socket error: "\
                                         + err[1] + ", retrying...."
     else: