diff --git a/Tools/audiopy/audiopy b/Tools/audiopy/audiopy
index b817c5c..869d87a 100755
--- a/Tools/audiopy/audiopy
+++ b/Tools/audiopy/audiopy
@@ -309,7 +309,7 @@
         info.o_gain = self.__scalevar.get()
         try:
             self.__devctl.setinfo(info)
-        except sunaudiodev.error, msg:
+        except sunaudiodev.error as msg:
             # TBD: what to do?  it's probably temporary.
             pass
 
@@ -496,7 +496,8 @@
     # now set the values
     try:
         device.setinfo(info)
-    except sunaudiodev.error, (code, msg):
+    except sunaudiodev.error as e:
+        (code, msg) = e
         if code <> errno.EINVAL:
             raise
     device.close()
diff --git a/Tools/bgen/bgen/scantools.py b/Tools/bgen/bgen/scantools.py
index d809a65..bae29a0 100644
--- a/Tools/bgen/bgen/scantools.py
+++ b/Tools/bgen/bgen/scantools.py
@@ -293,7 +293,7 @@
     def openrepairfile(self, filename = "REPAIR"):
         try:
             return open(filename, "rU")
-        except IOError, msg:
+        except IOError as msg:
             print repr(filename), ":", msg
             print "Cannot open repair file -- assume no repair needed"
             return None
@@ -419,7 +419,7 @@
     def openoutput(self, filename):
         try:
             file = open(filename, 'w')
-        except IOError, arg:
+        except IOError as arg:
             raise IOError, (filename, arg)
         self.setfiletype(filename)
         return file
@@ -460,7 +460,7 @@
         # If not on the path, or absolute, try default open()
         try:
             return open(filename, 'rU')
-        except IOError, arg:
+        except IOError as arg:
             raise IOError, (arg, filename)
 
     def getline(self):
diff --git a/Tools/compiler/compile.py b/Tools/compiler/compile.py
index 9d50425..51a9f0c 100644
--- a/Tools/compiler/compile.py
+++ b/Tools/compiler/compile.py
@@ -40,7 +40,7 @@
                 else:
                     compileFile(filename, DISPLAY)
 
-            except SyntaxError, err:
+            except SyntaxError as err:
                 print err
                 if err.lineno is not None:
                     print err.lineno
diff --git a/Tools/compiler/regrtest.py b/Tools/compiler/regrtest.py
index 4244d62..d86d746 100644
--- a/Tools/compiler/regrtest.py
+++ b/Tools/compiler/regrtest.py
@@ -42,7 +42,7 @@
             print file,
             try:
                 compileFile(source)
-            except SyntaxError, err:
+            except SyntaxError as err:
                 print err
                 continue
             # make sure the .pyc file is not over-written
diff --git a/Tools/faqwiz/faqw.py b/Tools/faqwiz/faqw.py
index a26e0d6..06db125 100755
--- a/Tools/faqwiz/faqw.py
+++ b/Tools/faqwiz/faqw.py
@@ -24,7 +24,7 @@
     os.chdir(FAQDIR)
     sys.path.insert(0, SRCDIR)
     import faqwiz
-except SystemExit, n:
+except SystemExit as n:
     sys.exit(n)
 except:
     t, v, tb = sys.exc_info()
diff --git a/Tools/faqwiz/faqwiz.py b/Tools/faqwiz/faqwiz.py
index bdd270c..d8b8cd5 100644
--- a/Tools/faqwiz/faqwiz.py
+++ b/Tools/faqwiz/faqwiz.py
@@ -348,7 +348,7 @@
             raise InvalidFile(file)
         try:
             fp = open(file)
-        except IOError, msg:
+        except IOError as msg:
             raise NoSuchFile(file, msg)
         try:
             return self.entryclass(fp, file, sec_num)
@@ -387,11 +387,11 @@
         else:
             try:
                 meth()
-            except InvalidFile, exc:
+            except InvalidFile as exc:
                 self.error("Invalid entry file name %s" % exc.file)
-            except NoSuchFile, exc:
+            except NoSuchFile as exc:
                 self.error("No entry with file name %s" % exc.file)
-            except NoSuchSection, exc:
+            except NoSuchSection as exc:
                 self.error("No section number %s" % exc.section)
         self.epilogue()
 
@@ -796,7 +796,7 @@
             pass
         try:
             f = open(file, 'w')
-        except IOError, why:
+        except IOError as why:
             self.error(CANTWRITE, file=file, why=why)
             return
         date = time.ctime(now)
diff --git a/Tools/freeze/checkextensions_win32.py b/Tools/freeze/checkextensions_win32.py
index a198ecf..ba3853c 100644
--- a/Tools/freeze/checkextensions_win32.py
+++ b/Tools/freeze/checkextensions_win32.py
@@ -131,7 +131,7 @@
     dsp_path, dsp_name = os.path.split(dsp)
     try:
         lines = open(dsp, "r").readlines()
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write("%s: %s\n" % (dsp, msg))
         return None
     for line in lines:
diff --git a/Tools/freeze/freeze.py b/Tools/freeze/freeze.py
index 3e6a580..786d53a 100755
--- a/Tools/freeze/freeze.py
+++ b/Tools/freeze/freeze.py
@@ -145,7 +145,7 @@
         if sys.argv[pos] == '-i':
             try:
                 options = open(sys.argv[pos+1]).read().split()
-            except IOError, why:
+            except IOError as why:
                 usage("File name '%s' specified with the -i option "
                       "can not be read - %s" % (sys.argv[pos+1], why) )
             # Replace the '-i' and the filename with the read params.
@@ -156,7 +156,7 @@
     # Now parse the command line with the extras inserted.
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'r:a:dEe:hmo:p:P:qs:wX:x:l:')
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage('getopt error: ' + str(msg))
 
     # proces option arguments
@@ -311,7 +311,7 @@
         try:
             os.mkdir(odir)
             print "Created output directory", odir
-        except os.error, msg:
+        except os.error as msg:
             usage('%s: mkdir failed (%s)' % (odir, str(msg)))
     base = ''
     if odir:
@@ -333,7 +333,7 @@
         try:
             custom_entry_point, python_entry_is_main = \
                 winmakemakefile.get_custom_entry_point(subsystem)
-        except ValueError, why:
+        except ValueError as why:
             usage(why)
 
 
diff --git a/Tools/i18n/msgfmt.py b/Tools/i18n/msgfmt.py
index 6433131..353be8b 100755
--- a/Tools/i18n/msgfmt.py
+++ b/Tools/i18n/msgfmt.py
@@ -110,7 +110,7 @@
 
     try:
         lines = open(infile).readlines()
-    except IOError, msg:
+    except IOError as msg:
         print >> sys.stderr, msg
         sys.exit(1)
 
@@ -167,7 +167,7 @@
 
     try:
         open(outfile,"wb").write(output)
-    except IOError,msg:
+    except IOError as msg:
         print >> sys.stderr, msg
 
 
@@ -176,7 +176,7 @@
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'hVo:',
                                    ['help', 'version', 'output-file='])
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(1, msg)
 
     outfile = None
diff --git a/Tools/i18n/pygettext.py b/Tools/i18n/pygettext.py
index eadd149..24f1ce1 100755
--- a/Tools/i18n/pygettext.py
+++ b/Tools/i18n/pygettext.py
@@ -512,7 +512,7 @@
              'style=', 'verbose', 'version', 'width=', 'exclude-file=',
              'docstrings', 'no-docstrings',
              ])
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(1, msg)
 
     # for holding option values
@@ -635,7 +635,7 @@
             eater.set_filename(filename)
             try:
                 tokenize.tokenize(fp.readline, eater)
-            except tokenize.TokenError, e:
+            except tokenize.TokenError as e:
                 print >> sys.stderr, '%s: %s, line %d, column %d' % (
                     e[0], filename, e[1][0], e[1][1])
         finally:
diff --git a/Tools/pybench/CommandLine.py b/Tools/pybench/CommandLine.py
index 6601be5..ddf958d 100644
--- a/Tools/pybench/CommandLine.py
+++ b/Tools/pybench/CommandLine.py
@@ -347,7 +347,7 @@
             if rc is None:
                 rc = 0
 
-        except SystemExit,rc:
+        except SystemExit as rc:
             pass
 
         except KeyboardInterrupt:
@@ -433,7 +433,7 @@
                 files = l
             self.optionlist = optlist
             self.files = files + self.files
-        except getopt.error,why:
+        except getopt.error as why:
             self.help(why)
             sys.exit(1)
 
diff --git a/Tools/pybench/pybench.py b/Tools/pybench/pybench.py
index 392ff50..e0ff732 100755
--- a/Tools/pybench/pybench.py
+++ b/Tools/pybench/pybench.py
@@ -865,7 +865,7 @@
                 bench.name = compare_to
                 f.close()
                 compare_to = bench
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/reading file %s: %s' % (
                     repr(compare_to),
                     reason)
@@ -885,7 +885,7 @@
                 else:
                     bench.print_benchmark(hidenoise=hidenoise,
                                           limitnames=limitnames)
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/reading file %s: %s' % (
                     repr(show_bench),
                     reason)
@@ -931,9 +931,9 @@
                 bench.name = reportfile
                 pickle.dump(bench,f)
                 f.close()
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/writing reportfile'
-            except IOError, reason:
+            except IOError as reason:
                 print '* Error opening/writing reportfile %s: %s' % (
                     reportfile,
                     reason)
diff --git a/Tools/pynche/Main.py b/Tools/pynche/Main.py
index 1fa3f17..a0a2d81 100644
--- a/Tools/pynche/Main.py
+++ b/Tools/pynche/Main.py
@@ -186,7 +186,7 @@
             sys.argv[1:],
             'hd:i:Xv',
             ['database=', 'initfile=', 'ignore', 'help', 'version'])
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(1, msg)
 
     if len(args) == 0:
diff --git a/Tools/scripts/byext.py b/Tools/scripts/byext.py
index 09610b0..998b4c0 100755
--- a/Tools/scripts/byext.py
+++ b/Tools/scripts/byext.py
@@ -24,7 +24,7 @@
         self.addstats("<dir>", "dirs", 1)
         try:
             names = os.listdir(dir)
-        except os.error, err:
+        except os.error as err:
             sys.stderr.write("Can't list %s: %s\n" % (dir, err))
             self.addstats("<dir>", "unlistable", 1)
             return
@@ -53,7 +53,7 @@
         self.addstats(ext, "files", 1)
         try:
             f = open(filename, "rb")
-        except IOError, err:
+        except IOError as err:
             sys.stderr.write("Can't open %s: %s\n" % (filename, err))
             self.addstats(ext, "unopenable", 1)
             return
diff --git a/Tools/scripts/byteyears.py b/Tools/scripts/byteyears.py
index ba38caf..b4d4335 100755
--- a/Tools/scripts/byteyears.py
+++ b/Tools/scripts/byteyears.py
@@ -43,7 +43,7 @@
     for filename in sys.argv[1:]:
         try:
             st = statfunc(filename)
-        except os.error, msg:
+        except os.error as msg:
             sys.stderr.write("can't stat %r: %r\n" % (filename, msg))
             status = 1
             st = ()
diff --git a/Tools/scripts/checkappend.py b/Tools/scripts/checkappend.py
index a8714d9..2025ba9 100755
--- a/Tools/scripts/checkappend.py
+++ b/Tools/scripts/checkappend.py
@@ -50,7 +50,7 @@
     global verbose
     try:
         opts, args = getopt.getopt(sys.argv[1:], "v")
-    except getopt.error, msg:
+    except getopt.error as msg:
         errprint(str(msg) + "\n\n" + __doc__)
         return
     for opt, optarg in opts:
@@ -77,7 +77,7 @@
 
     try:
         f = open(file)
-    except IOError, msg:
+    except IOError as msg:
         errprint("%r: I/O Error: %s" % (file, msg))
         return
 
@@ -104,7 +104,7 @@
     def run(self):
         try:
             tokenize.tokenize(self.file.readline, self.tokeneater)
-        except tokenize.TokenError, msg:
+        except tokenize.TokenError as msg:
             errprint("%r: Token Error: %s" % (self.fname, msg))
             self.nerrors = self.nerrors + 1
         return self.nerrors == 0
diff --git a/Tools/scripts/classfix.py b/Tools/scripts/classfix.py
index d30700f..f65e630 100755
--- a/Tools/scripts/classfix.py
+++ b/Tools/scripts/classfix.py
@@ -62,7 +62,7 @@
     bad = 0
     try:
         names = os.listdir(dirname)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: cannot list directory: %r\n' % (dirname, msg))
         return 1
     names.sort()
@@ -83,7 +83,7 @@
 ##  dbg('fix(%r)\n' % (filename,))
     try:
         f = open(filename, 'r')
-    except IOError, msg:
+    except IOError as msg:
         err('%s: cannot open: %r\n' % (filename, msg))
         return 1
     head, tail = os.path.split(filename)
@@ -106,7 +106,7 @@
             if g is None:
                 try:
                     g = open(tempname, 'w')
-                except IOError, msg:
+                except IOError as msg:
                     f.close()
                     err('%s: cannot create: %r\n' % (tempname, msg))
                     return 1
@@ -130,17 +130,17 @@
     try:
         statbuf = os.stat(filename)
         os.chmod(tempname, statbuf[ST_MODE] & 07777)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: warning: chmod failed (%r)\n' % (tempname, msg))
     # Then make a backup of the original file as filename~
     try:
         os.rename(filename, filename + '~')
-    except os.error, msg:
+    except os.error as msg:
         err('%s: warning: backup failed (%r)\n' % (filename, msg))
     # Now move the temp file to the original file
     try:
         os.rename(tempname, filename)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: rename failed (%r)\n' % (filename, msg))
         return 1
     # Return succes
diff --git a/Tools/scripts/cleanfuture.py b/Tools/scripts/cleanfuture.py
index 3f2da3a..0e90cd3 100644
--- a/Tools/scripts/cleanfuture.py
+++ b/Tools/scripts/cleanfuture.py
@@ -59,7 +59,7 @@
     global verbose, recurse, dryrun
     try:
         opts, args = getopt.getopt(sys.argv[1:], "drv")
-    except getopt.error, msg:
+    except getopt.error as msg:
         errprint(msg)
         return
     for o, a in opts:
@@ -92,7 +92,7 @@
         print "checking", file, "...",
     try:
         f = open(file)
-    except IOError, msg:
+    except IOError as msg:
         errprint("%r: I/O Error: %s" % (file, str(msg)))
         return
 
diff --git a/Tools/scripts/cvsfiles.py b/Tools/scripts/cvsfiles.py
index 53b4294..eac5945 100755
--- a/Tools/scripts/cvsfiles.py
+++ b/Tools/scripts/cvsfiles.py
@@ -20,7 +20,7 @@
 def main():
     try:
         opts, args = getopt.getopt(sys.argv[1:], "n:")
-    except getopt.error, msg:
+    except getopt.error as msg:
         print msg
         print __doc__,
         return 1
diff --git a/Tools/scripts/dutree.py b/Tools/scripts/dutree.py
index d938ae1..c9f6ea8 100755
--- a/Tools/scripts/dutree.py
+++ b/Tools/scripts/dutree.py
@@ -18,7 +18,7 @@
         total, d = store(size, comps, total, d)
     try:
         display(total, d)
-    except IOError, e:
+    except IOError as e:
         if e.errno != errno.EPIPE:
             raise
 
diff --git a/Tools/scripts/finddiv.py b/Tools/scripts/finddiv.py
index 97f6331..8fdc52b 100755
--- a/Tools/scripts/finddiv.py
+++ b/Tools/scripts/finddiv.py
@@ -23,7 +23,7 @@
 def main():
     try:
         opts, args = getopt.getopt(sys.argv[1:], "lh")
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(msg)
         return 2
     if not args:
@@ -52,7 +52,7 @@
         return processdir(filename, listnames)
     try:
         fp = open(filename)
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write("Can't open: %s\n" % msg)
         return 1
     g = tokenize.generate_tokens(fp.readline)
@@ -70,7 +70,7 @@
 def processdir(dir, listnames):
     try:
         names = os.listdir(dir)
-    except os.error, msg:
+    except os.error as msg:
         sys.stderr.write("Can't list directory: %s\n" % dir)
         return 1
     files = []
diff --git a/Tools/scripts/findlinksto.py b/Tools/scripts/findlinksto.py
index 8dd4bfb..f23316d 100755
--- a/Tools/scripts/findlinksto.py
+++ b/Tools/scripts/findlinksto.py
@@ -14,7 +14,7 @@
         opts, args = getopt.getopt(sys.argv[1:], '')
         if len(args) < 2:
             raise getopt.GetoptError('not enough arguments', None)
-    except getopt.GetoptError, msg:
+    except getopt.GetoptError as msg:
         sys.stdout = sys.stderr
         print msg
         print 'usage: findlinksto pattern directory ...'
diff --git a/Tools/scripts/findnocoding.py b/Tools/scripts/findnocoding.py
index 537f0a1..28a299a 100755
--- a/Tools/scripts/findnocoding.py
+++ b/Tools/scripts/findnocoding.py
@@ -78,7 +78,7 @@
 
 try:
     opts, args = getopt.getopt(sys.argv[1:], 'cd')
-except getopt.error, msg:
+except getopt.error as msg:
     print >>sys.stderr, msg
     print >>sys.stderr, usage
     sys.exit(1)
diff --git a/Tools/scripts/fixcid.py b/Tools/scripts/fixcid.py
index 433a425..29e0e10 100755
--- a/Tools/scripts/fixcid.py
+++ b/Tools/scripts/fixcid.py
@@ -62,7 +62,7 @@
 def main():
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'crs:')
-    except getopt.error, msg:
+    except getopt.error as msg:
         err('Options error: ' + str(msg) + '\n')
         usage()
         sys.exit(2)
@@ -97,7 +97,7 @@
     bad = 0
     try:
         names = os.listdir(dirname)
-    except os.error, msg:
+    except os.error as msg:
         err(dirname + ': cannot list directory: ' + str(msg) + '\n')
         return 1
     names.sort()
@@ -124,7 +124,7 @@
         # File replacement mode
         try:
             f = open(filename, 'r')
-        except IOError, msg:
+        except IOError as msg:
             err(filename + ': cannot open: ' + str(msg) + '\n')
             return 1
         head, tail = os.path.split(filename)
@@ -148,7 +148,7 @@
             if g is None:
                 try:
                     g = open(tempname, 'w')
-                except IOError, msg:
+                except IOError as msg:
                     f.close()
                     err(tempname+': cannot create: '+
                         str(msg)+'\n')
@@ -175,17 +175,17 @@
     try:
         statbuf = os.stat(filename)
         os.chmod(tempname, statbuf[ST_MODE] & 07777)
-    except os.error, msg:
+    except os.error as msg:
         err(tempname + ': warning: chmod failed (' + str(msg) + ')\n')
     # Then make a backup of the original file as filename~
     try:
         os.rename(filename, filename + '~')
-    except os.error, msg:
+    except os.error as msg:
         err(filename + ': warning: backup failed (' + str(msg) + ')\n')
     # Now move the temp file to the original file
     try:
         os.rename(tempname, filename)
-    except os.error, msg:
+    except os.error as msg:
         err(filename + ': rename failed (' + str(msg) + ')\n')
         return 1
     # Return succes
@@ -276,7 +276,7 @@
 def addsubst(substfile):
     try:
         fp = open(substfile, 'r')
-    except IOError, msg:
+    except IOError as msg:
         err(substfile + ': cannot read substfile: ' + str(msg) + '\n')
         sys.exit(1)
     lineno = 0
diff --git a/Tools/scripts/fixdiv.py b/Tools/scripts/fixdiv.py
index b2cab88..98b8a81 100755
--- a/Tools/scripts/fixdiv.py
+++ b/Tools/scripts/fixdiv.py
@@ -140,7 +140,7 @@
 def main():
     try:
         opts, args = getopt.getopt(sys.argv[1:], "hm")
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(msg)
         return 2
     for o, a in opts:
@@ -181,7 +181,7 @@
     prog = re.compile(PATTERN)
     try:
         f = open(warningsfile)
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write("can't open: %s\n" % msg)
         return
     warnings = {}
@@ -207,7 +207,7 @@
     assert list # if this fails, readwarnings() is broken
     try:
         fp = open(filename)
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write("can't open: %s\n" % msg)
         return 1
     print "Index:", filename
diff --git a/Tools/scripts/fixheader.py b/Tools/scripts/fixheader.py
index 1bf5c52..8e8ac59 100755
--- a/Tools/scripts/fixheader.py
+++ b/Tools/scripts/fixheader.py
@@ -12,7 +12,7 @@
 def process(filename):
     try:
         f = open(filename, 'r')
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write('%s: can\'t open: %s\n' % (filename, str(msg)))
         return
     data = f.read()
@@ -22,7 +22,7 @@
         return
     try:
         f = open(filename, 'w')
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write('%s: can\'t write: %s\n' % (filename, str(msg)))
         return
     sys.stderr.write('Processing %s ...\n' % filename)
diff --git a/Tools/scripts/fixnotice.py b/Tools/scripts/fixnotice.py
index 0ae4872..eedf5ba 100755
--- a/Tools/scripts/fixnotice.py
+++ b/Tools/scripts/fixnotice.py
@@ -62,7 +62,7 @@
         opts, args = getopt.getopt(sys.argv[1:], 'hv',
                                    ['help', 'oldnotice=', 'newnotice=',
                                     'dry-run', 'verbose'])
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(1, msg)
 
     for opt, arg in opts:
diff --git a/Tools/scripts/fixps.py b/Tools/scripts/fixps.py
index 2ff15f4..c858e59 100755
--- a/Tools/scripts/fixps.py
+++ b/Tools/scripts/fixps.py
@@ -11,7 +11,7 @@
     for filename in sys.argv[1:]:
         try:
             f = open(filename, 'r')
-        except IOError, msg:
+        except IOError as msg:
             print filename, ': can\'t open :', msg
             continue
         line = f.readline()
diff --git a/Tools/scripts/ftpmirror.py b/Tools/scripts/ftpmirror.py
index caade16..39ef18e 100755
--- a/Tools/scripts/ftpmirror.py
+++ b/Tools/scripts/ftpmirror.py
@@ -45,7 +45,7 @@
     global verbose, interactive, mac, rmok, nologin
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'a:bil:mnp:qrs:v')
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(msg)
     login = ''
     passwd = ''
@@ -108,13 +108,13 @@
         if verbose: print 'Creating local directory', repr(localdir)
         try:
             makedir(localdir)
-        except os.error, msg:
+        except os.error as msg:
             print "Failed to establish local directory", repr(localdir)
             return
     infofilename = os.path.join(localdir, '.mirrorinfo')
     try:
         text = open(infofilename, 'r').read()
-    except IOError, msg:
+    except IOError as msg:
         text = '{}'
     try:
         info = eval(text)
@@ -190,13 +190,13 @@
                 print "Creating symlink %r -> %r" % (filename, linkto)
             try:
                 os.symlink(linkto, tempname)
-            except IOError, msg:
+            except IOError as msg:
                 print "Can't create %r: %s" % (tempname, msg)
                 continue
         else:
             try:
                 fp = open(tempname, 'wb')
-            except IOError, msg:
+            except IOError as msg:
                 print "Can't create %r: %s" % (tempname, msg)
                 continue
             if verbose:
@@ -209,7 +209,7 @@
             try:
                 f.retrbinary('RETR ' + filename,
                              fp1.write, 8*1024)
-            except ftplib.error_perm, msg:
+            except ftplib.error_perm as msg:
                 print msg
             t1 = time.time()
             bytes = fp.tell()
@@ -222,7 +222,7 @@
             pass            # Ignore the error
         try:
             os.rename(tempname, fullname)
-        except os.error, msg:
+        except os.error as msg:
             print "Can't rename %r to %r: %s" % (tempname, fullname, msg)
             continue
         info[filename] = infostuff
@@ -292,7 +292,7 @@
             print 'Remote cwd', repr(subdir)
         try:
             f.cwd(subdir)
-        except ftplib.error_perm, msg:
+        except ftplib.error_perm as msg:
             print "Can't chdir to", repr(subdir), ":", repr(msg)
         else:
             if verbose: print 'Mirroring as', repr(localsubdir)
@@ -322,13 +322,13 @@
             return 0
         try:
             os.rmdir(fullname)
-        except os.error, msg:
+        except os.error as msg:
             print "Can't remove local directory %r: %s" % (fullname, msg)
             return 0
     else:
         try:
             os.unlink(fullname)
-        except os.error, msg:
+        except os.error as msg:
             print "Can't remove local file %r: %s" % (fullname, msg)
             return 0
     return 1
diff --git a/Tools/scripts/linktree.py b/Tools/scripts/linktree.py
index 995f2ef..7f17046 100755
--- a/Tools/scripts/linktree.py
+++ b/Tools/scripts/linktree.py
@@ -32,13 +32,13 @@
         return 1
     try:
         os.mkdir(newtree, 0777)
-    except os.error, msg:
+    except os.error as msg:
         print newtree + ': cannot mkdir:', msg
         return 1
     linkname = os.path.join(newtree, link)
     try:
         os.symlink(os.path.join(os.pardir, oldtree), linkname)
-    except os.error, msg:
+    except os.error as msg:
         if not link_may_fail:
             print linkname + ': cannot symlink:', msg
             return 1
@@ -51,7 +51,7 @@
     if debug: print 'linknames', (old, new, link)
     try:
         names = os.listdir(old)
-    except os.error, msg:
+    except os.error as msg:
         print old + ': warning: cannot listdir:', msg
         return
     for name in names:
diff --git a/Tools/scripts/logmerge.py b/Tools/scripts/logmerge.py
index edfec2c..d07dfc6 100755
--- a/Tools/scripts/logmerge.py
+++ b/Tools/scripts/logmerge.py
@@ -180,6 +180,6 @@
 if __name__ == '__main__':
     try:
         main()
-    except IOError, e:
+    except IOError as e:
         if e.errno != errno.EPIPE:
             raise
diff --git a/Tools/scripts/md5sum.py b/Tools/scripts/md5sum.py
index e045f1a..140c0b3 100644
--- a/Tools/scripts/md5sum.py
+++ b/Tools/scripts/md5sum.py
@@ -43,7 +43,7 @@
 def printsum(filename, out=sys.stdout):
     try:
         fp = open(filename, rmode)
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write('%s: Can\'t open: %s\n' % (filename, msg))
         return 1
     if fnfilter:
@@ -60,7 +60,7 @@
             if not data:
                 break
             m.update(data)
-    except IOError, msg:
+    except IOError as msg:
         sys.stderr.write('%s: I/O error: %s\n' % (filename, msg))
         return 1
     out.write('%s %s\n' % (m.hexdigest(), filename))
@@ -70,7 +70,7 @@
     global fnfilter, rmode, bufsize
     try:
         opts, args = getopt.getopt(args, 'blts:')
-    except getopt.error, msg:
+    except getopt.error as msg:
         sys.stderr.write('%s: %s\n%s' % (sys.argv[0], msg, usage))
         return 2
     for o, a in opts:
diff --git a/Tools/scripts/methfix.py b/Tools/scripts/methfix.py
index b81871f..11875a1 100755
--- a/Tools/scripts/methfix.py
+++ b/Tools/scripts/methfix.py
@@ -59,7 +59,7 @@
     bad = 0
     try:
         names = os.listdir(dirname)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: cannot list directory: %r\n' % (dirname, msg))
         return 1
     names.sort()
@@ -80,7 +80,7 @@
 ##  dbg('fix(%r)\n' % (filename,))
     try:
         f = open(filename, 'r')
-    except IOError, msg:
+    except IOError as msg:
         err('%s: cannot open: %r\n' % (filename, msg))
         return 1
     head, tail = os.path.split(filename)
@@ -117,7 +117,7 @@
             if g is None:
                 try:
                     g = open(tempname, 'w')
-                except IOError, msg:
+                except IOError as msg:
                     f.close()
                     err('%s: cannot create: %r\n' % (tempname, msg))
                     return 1
@@ -141,17 +141,17 @@
     try:
         statbuf = os.stat(filename)
         os.chmod(tempname, statbuf[ST_MODE] & 07777)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: warning: chmod failed (%r)\n' % (tempname, msg))
     # Then make a backup of the original file as filename~
     try:
         os.rename(filename, filename + '~')
-    except os.error, msg:
+    except os.error as msg:
         err('%s: warning: backup failed (%r)\n' % (filename, msg))
     # Now move the temp file to the original file
     try:
         os.rename(tempname, filename)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: rename failed (%r)\n' % (filename, msg))
         return 1
     # Return succes
diff --git a/Tools/scripts/ndiff.py b/Tools/scripts/ndiff.py
index 88712b8..2afc132 100755
--- a/Tools/scripts/ndiff.py
+++ b/Tools/scripts/ndiff.py
@@ -61,7 +61,7 @@
 def fopen(fname):
     try:
         return open(fname, 'U')
-    except IOError, detail:
+    except IOError as detail:
         return fail("couldn't open " + fname + ": " + str(detail))
 
 # open two files & spray the diff to stdout; return false iff a problem
@@ -85,7 +85,7 @@
     import getopt
     try:
         opts, args = getopt.getopt(args, "qr:")
-    except getopt.error, detail:
+    except getopt.error as detail:
         return fail(str(detail))
     noisy = 1
     qseen = rseen = 0
diff --git a/Tools/scripts/pathfix.py b/Tools/scripts/pathfix.py
index 7f6f191..c59c0f2 100755
--- a/Tools/scripts/pathfix.py
+++ b/Tools/scripts/pathfix.py
@@ -37,7 +37,7 @@
              sys.argv[0])
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'i:')
-    except getopt.error, msg:
+    except getopt.error as msg:
         err(msg + '\n')
         err(usage)
         sys.exit(2)
@@ -68,7 +68,7 @@
     bad = 0
     try:
         names = os.listdir(dirname)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: cannot list directory: %r\n' % (dirname, msg))
         return 1
     names.sort()
@@ -89,7 +89,7 @@
 ##  dbg('fix(%r)\n' % (filename,))
     try:
         f = open(filename, 'r')
-    except IOError, msg:
+    except IOError as msg:
         err('%s: cannot open: %r\n' % (filename, msg))
         return 1
     line = f.readline()
@@ -102,7 +102,7 @@
     tempname = os.path.join(head, '@' + tail)
     try:
         g = open(tempname, 'w')
-    except IOError, msg:
+    except IOError as msg:
         f.close()
         err('%s: cannot create: %r\n' % (tempname, msg))
         return 1
@@ -122,17 +122,17 @@
     try:
         statbuf = os.stat(filename)
         os.chmod(tempname, statbuf[ST_MODE] & 07777)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: warning: chmod failed (%r)\n' % (tempname, msg))
     # Then make a backup of the original file as filename~
     try:
         os.rename(filename, filename + '~')
-    except os.error, msg:
+    except os.error as msg:
         err('%s: warning: backup failed (%r)\n' % (filename, msg))
     # Now move the temp file to the original file
     try:
         os.rename(tempname, filename)
-    except os.error, msg:
+    except os.error as msg:
         err('%s: rename failed (%r)\n' % (filename, msg))
         return 1
     # Return succes
diff --git a/Tools/scripts/pindent.py b/Tools/scripts/pindent.py
index 89ed9e6..9f444f2 100755
--- a/Tools/scripts/pindent.py
+++ b/Tools/scripts/pindent.py
@@ -491,7 +491,7 @@
     import getopt
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'cdrs:t:e')
-    except getopt.error, msg:
+    except getopt.error as msg:
         sys.stderr.write('Error: %s\n' % msg)
         sys.stderr.write(usage)
         sys.exit(2)
diff --git a/Tools/scripts/pysource.py b/Tools/scripts/pysource.py
index 71e0ded..98a78f0 100644
--- a/Tools/scripts/pysource.py
+++ b/Tools/scripts/pysource.py
@@ -33,7 +33,7 @@
 def _open(fullpath):
     try:
         size = os.stat(fullpath).st_size
-    except OSError, err: # Permission denied - ignore the file
+    except OSError as err: # Permission denied - ignore the file
         print_debug("%s: permission denied: %s" % (fullpath, err))
         return None
 
@@ -43,7 +43,7 @@
 
     try:
         return open(fullpath, 'rU')
-    except IOError, err: # Access denied, or a special file - ignore it
+    except IOError as err: # Access denied, or a special file - ignore it
         print_debug("%s: access denied: %s" % (fullpath, err))
         return None
 
@@ -81,7 +81,7 @@
 
     try:
         compile(code, fullpath, "exec")
-    except Exception, err:
+    except Exception as err:
         print_debug("%s: cannot compile: %s" % (fullpath, err))
         return False
 
diff --git a/Tools/scripts/redemo.py b/Tools/scripts/redemo.py
index de7f3c4..b9bfb96 100644
--- a/Tools/scripts/redemo.py
+++ b/Tools/scripts/redemo.py
@@ -104,7 +104,7 @@
                                        self.getflags())
             bg = self.promptdisplay['background']
             self.statusdisplay.config(text="", background=bg)
-        except re.error, msg:
+        except re.error as msg:
             self.compiled = None
             self.statusdisplay.config(
                     text="re.error: %s" % str(msg),
diff --git a/Tools/scripts/reindent.py b/Tools/scripts/reindent.py
index 5ac98c7..70242cc 100644
--- a/Tools/scripts/reindent.py
+++ b/Tools/scripts/reindent.py
@@ -61,7 +61,7 @@
     try:
         opts, args = getopt.getopt(sys.argv[1:], "drvh",
                                    ["dryrun", "recurse", "verbose", "help"])
-    except getopt.error, msg:
+    except getopt.error as msg:
         usage(msg)
         return
     for o, a in opts:
@@ -99,7 +99,7 @@
         print "checking", file, "...",
     try:
         f = open(file)
-    except IOError, msg:
+    except IOError as msg:
         errprint("%s: I/O Error: %s" % (file, str(msg)))
         return
 
diff --git a/Tools/scripts/rgrep.py b/Tools/scripts/rgrep.py
index b644206..9d3d595 100755
--- a/Tools/scripts/rgrep.py
+++ b/Tools/scripts/rgrep.py
@@ -23,11 +23,11 @@
     pattern, filename = args
     try:
         prog = re.compile(pattern, reflags)
-    except re.error, msg:
+    except re.error as msg:
         usage("error in regular expression: %s" % str(msg))
     try:
         f = open(filename)
-    except IOError, msg:
+    except IOError as msg:
         usage("can't open %s: %s" % (repr(filename), str(msg)), 1)
     f.seek(0, 2)
     pos = f.tell()
diff --git a/Tools/scripts/texi2html.py b/Tools/scripts/texi2html.py
index 3ecaee6..d849d7c 100755
--- a/Tools/scripts/texi2html.py
+++ b/Tools/scripts/texi2html.py
@@ -554,7 +554,7 @@
         file = os.path.join(self.includedir, file)
         try:
             fp = open(file, 'r')
-        except IOError, msg:
+        except IOError as msg:
             print '*** Can\'t open include file', repr(file)
             return
         print '!'*self.debugging, '--> file', repr(file)
@@ -1797,7 +1797,7 @@
             print>>fp, ''
             self.dumpfiles(fp)
             fp.close()
-        except IOError, msg:
+        except IOError as msg:
             print projectfile, ':', msg
             sys.exit(1)
 
@@ -1822,7 +1822,7 @@
             print>>fp, '</BODY>'
             print>>fp, '</HTML>'
             fp.close()
-        except IOError, msg:
+        except IOError as msg:
             print contentfile, ':', msg
             sys.exit(1)
 
@@ -1844,7 +1844,7 @@
             print>>fp, '</BODY>'
             print>>fp, '</HTML>'
             fp.close()
-        except IOError, msg:
+        except IOError as msg:
             print indexfile  , ':', msg
             sys.exit(1)
 
@@ -2063,7 +2063,7 @@
 
     try:
         fp = open(file, 'r')
-    except IOError, msg:
+    except IOError as msg:
         print file, ':', msg
         sys.exit(1)
 
diff --git a/Tools/scripts/treesync.py b/Tools/scripts/treesync.py
index 4fb1798..a7a2098 100755
--- a/Tools/scripts/treesync.py
+++ b/Tools/scripts/treesync.py
@@ -78,7 +78,7 @@
         print "creating slave directory", slave
         try:
             os.mkdir(slave)
-        except os.error, msg:
+        except os.error as msg:
             print "can't make slave directory", slave, ":", msg
             return
         else:
diff --git a/Tools/scripts/untabify.py b/Tools/scripts/untabify.py
index 9bdf235..e4a2cc0 100755
--- a/Tools/scripts/untabify.py
+++ b/Tools/scripts/untabify.py
@@ -12,7 +12,7 @@
         opts, args = getopt.getopt(sys.argv[1:], "t:")
         if not args:
             raise getopt.error, "At least one file argument required"
-    except getopt.error, msg:
+    except getopt.error as msg:
         print msg
         print "usage:", sys.argv[0], "[-t tabwidth] file ..."
         return
@@ -28,7 +28,7 @@
         f = open(filename)
         text = f.read()
         f.close()
-    except IOError, msg:
+    except IOError as msg:
         print "%r: I/O error: %s" % (filename, msg)
         return
     newtext = text.expandtabs(tabsize)
diff --git a/Tools/unicode/comparecodecs.py b/Tools/unicode/comparecodecs.py
index cd417a4..a293283 100644
--- a/Tools/unicode/comparecodecs.py
+++ b/Tools/unicode/comparecodecs.py
@@ -18,11 +18,11 @@
         u = unichr(i)
         try:
             c1 = u.encode(encoding1)
-        except UnicodeError, reason:
+        except UnicodeError as reason:
             c1 = '<undefined>'
         try:
             c2 = u.encode(encoding2)
-        except UnicodeError, reason:
+        except UnicodeError as reason:
             c2 = '<undefined>'
         if c1 != c2:
             print ' * encoding mismatch for 0x%04X: %-14r != %r' % \
diff --git a/Tools/unicode/gencodec.py b/Tools/unicode/gencodec.py
index dabcd72..47d81eb 100644
--- a/Tools/unicode/gencodec.py
+++ b/Tools/unicode/gencodec.py
@@ -130,7 +130,7 @@
     try:
         return '(' + ', '.join(['0x%0*X' % (precision, item)
                                 for item in t]) + ')'
-    except TypeError, why:
+    except TypeError as why:
         print '* failed to convert %r: %s' % (t, why)
         raise
 
@@ -393,7 +393,7 @@
             else:
                 pymap(mappathname, map, dirprefix + codefile,name,comments)
                 marshalmap(mappathname, map, dirprefix + marshalfile)
-        except ValueError, why:
+        except ValueError as why:
             print '* conversion failed: %s' % why
             raise
 
@@ -414,7 +414,7 @@
                 print '* map is empty; skipping'
             else:
                 pymap(mapname, map, dirprefix + codefile,name,comments)
-        except ValueError, why:
+        except ValueError as why:
             print '* conversion failed: %s' % why
 
 if __name__ == '__main__':
diff --git a/Tools/unicode/listcodecs.py b/Tools/unicode/listcodecs.py
index 19d21e1..c196ced 100644
--- a/Tools/unicode/listcodecs.py
+++ b/Tools/unicode/listcodecs.py
@@ -22,7 +22,7 @@
         except LookupError:
             # Codec not found
             continue
-        except Exception, reason:
+        except Exception as reason:
             # Probably an error from importing the codec; still it's
             # a valid code name
             if _debug:
diff --git a/Tools/versioncheck/pyversioncheck.py b/Tools/versioncheck/pyversioncheck.py
index 1446653..00ea496 100644
--- a/Tools/versioncheck/pyversioncheck.py
+++ b/Tools/versioncheck/pyversioncheck.py
@@ -49,7 +49,7 @@
         print '  Checking %s'%url
     try:
         fp = urllib.urlopen(url)
-    except IOError, arg:
+    except IOError as arg:
         if verbose >= VERBOSE_EACHFILE:
             print '    Cannot open:', arg
         return -1, None, None
diff --git a/Tools/webchecker/wcgui.py b/Tools/webchecker/wcgui.py
index 96aed0a..c6e216c 100755
--- a/Tools/webchecker/wcgui.py
+++ b/Tools/webchecker/wcgui.py
@@ -74,7 +74,7 @@
 def main():
     try:
         opts, args = getopt.getopt(sys.argv[1:], 't:m:qva')
-    except getopt.error, msg:
+    except getopt.error as msg:
         sys.stdout = sys.stderr
         print msg
         print __doc__%vars(webchecker)
diff --git a/Tools/webchecker/webchecker.py b/Tools/webchecker/webchecker.py
index 923e8e6..10e93c7 100755
--- a/Tools/webchecker/webchecker.py
+++ b/Tools/webchecker/webchecker.py
@@ -153,7 +153,7 @@
 
     try:
         opts, args = getopt.getopt(sys.argv[1:], 'Rd:m:nqr:t:vxa')
-    except getopt.error, msg:
+    except getopt.error as msg:
         sys.stdout = sys.stderr
         print msg
         print __doc__%globals()
@@ -335,7 +335,7 @@
         rp.set_url(url)
         try:
             rp.read()
-        except (OSError, IOError), msg:
+        except (OSError, IOError) as msg:
             self.note(1, "I/O error parsing %s: %s", url, msg)
 
     def run(self):
@@ -402,7 +402,7 @@
             return
         try:
             page = self.getpage(url_pair)
-        except sgmllib.SGMLParseError, msg:
+        except sgmllib.SGMLParseError as msg:
             msg = self.sanitize(msg)
             self.note(0, "Error parsing %s: %s",
                           self.format_url(url_pair), msg)
@@ -541,7 +541,7 @@
         url, fragment = url_pair
         try:
             return self.urlopener.open(url)
-        except (OSError, IOError), msg:
+        except (OSError, IOError) as msg:
             msg = self.sanitize(msg)
             self.note(0, "Error %s", msg)
             if self.verbose > 0:
@@ -759,7 +759,7 @@
                 return self.open_file(url + "index.html")
             try:
                 names = os.listdir(path)
-            except os.error, msg:
+            except os.error as msg:
                 exc_type, exc_value, exc_tb = sys.exc_info()
                 raise IOError, msg, exc_tb
             names.sort()
diff --git a/Tools/webchecker/websucker.py b/Tools/webchecker/websucker.py
index ef2fa44..239cb52 100755
--- a/Tools/webchecker/websucker.py
+++ b/Tools/webchecker/websucker.py
@@ -21,7 +21,7 @@
     verbose = webchecker.VERBOSE
     try:
         opts, args = getopt.getopt(sys.argv[1:], "qv")
-    except getopt.error, msg:
+    except getopt.error as msg:
         print msg
         print "usage:", sys.argv[0], "[-qv] ... [rooturl] ..."
         return 2
@@ -83,7 +83,7 @@
             f.write(text)
             f.close()
             self.message("saved %s", path)
-        except IOError, msg:
+        except IOError as msg:
             self.message("didn't save %s: %s", path, str(msg))
 
     def savefilename(self, url):