diff --git a/Tools/freeze/bkfile.py b/Tools/freeze/bkfile.py
index 0e895f2..58246fa 100644
--- a/Tools/freeze/bkfile.py
+++ b/Tools/freeze/bkfile.py
@@ -7,11 +7,11 @@
         self.__backup = file + '~'
         try:
             os.unlink(self.__backup)
-        except os.error:
+        except OSError:
             pass
         try:
             os.rename(file, self.__backup)
-        except os.error:
+        except OSError:
             self.__backup = None
         self.__file = _orig_open(file, mode, bufsize)
         self.closed = self.__file.closed
diff --git a/Tools/freeze/freeze.py b/Tools/freeze/freeze.py
index 769a2d1..479ca3c 100755
--- a/Tools/freeze/freeze.py
+++ b/Tools/freeze/freeze.py
@@ -311,7 +311,7 @@
         try:
             os.mkdir(odir)
             print("Created output directory", odir)
-        except os.error as msg:
+        except OSError as msg:
             usage('%s: mkdir failed (%s)' % (odir, str(msg)))
     base = ''
     if odir:
diff --git a/Tools/scripts/byext.py b/Tools/scripts/byext.py
index b79ff37..736a441 100755
--- a/Tools/scripts/byext.py
+++ b/Tools/scripts/byext.py
@@ -25,7 +25,7 @@
         self.addstats("<dir>", "dirs", 1)
         try:
             names = os.listdir(dir)
-        except os.error as err:
+        except OSError as err:
             sys.stderr.write("Can't list %s: %s\n" % (dir, err))
             self.addstats("<dir>", "unlistable", 1)
             return
diff --git a/Tools/scripts/byteyears.py b/Tools/scripts/byteyears.py
index 490b37f..f58c346 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 as msg:
+        except OSError as msg:
             sys.stderr.write("can't stat %r: %r\n" % (filename, msg))
             status = 1
             st = ()
diff --git a/Tools/scripts/checkpyc.py b/Tools/scripts/checkpyc.py
index d4fdce2..009f85b 100755
--- a/Tools/scripts/checkpyc.py
+++ b/Tools/scripts/checkpyc.py
@@ -24,7 +24,7 @@
     for dirname in sys.path:
         try:
             names = os.listdir(dirname)
-        except os.error:
+        except OSError:
             print('Cannot list directory', repr(dirname))
             continue
         if not silent:
@@ -34,7 +34,7 @@
                 name = os.path.join(dirname, name)
                 try:
                     st = os.stat(name)
-                except os.error:
+                except OSError:
                     print('Cannot stat', repr(name))
                     continue
                 if verbose:
diff --git a/Tools/scripts/copytime.py b/Tools/scripts/copytime.py
index e0220b5..715683f 100755
--- a/Tools/scripts/copytime.py
+++ b/Tools/scripts/copytime.py
@@ -13,12 +13,12 @@
     file1, file2 = sys.argv[1], sys.argv[2]
     try:
         stat1 = os.stat(file1)
-    except os.error:
+    except OSError:
         sys.stderr.write(file1 + ': cannot stat\n')
         sys.exit(1)
     try:
         os.utime(file2, (stat1[ST_ATIME], stat1[ST_MTIME]))
-    except os.error:
+    except OSError:
         sys.stderr.write(file2 + ': cannot change time\n')
         sys.exit(2)
 
diff --git a/Tools/scripts/finddiv.py b/Tools/scripts/finddiv.py
index f24a702..a705f56 100755
--- a/Tools/scripts/finddiv.py
+++ b/Tools/scripts/finddiv.py
@@ -70,7 +70,7 @@
 def processdir(dir, listnames):
     try:
         names = os.listdir(dir)
-    except os.error as msg:
+    except OSError 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 b4c09ef..b924f27 100755
--- a/Tools/scripts/findlinksto.py
+++ b/Tools/scripts/findlinksto.py
@@ -36,7 +36,7 @@
             linkto = os.readlink(name)
             if prog.search(linkto) is not None:
                 print(name, '->', linkto)
-        except os.error:
+        except OSError:
             pass
 
 if __name__ == '__main__':
diff --git a/Tools/scripts/fixcid.py b/Tools/scripts/fixcid.py
index 87e2a09..1e4c428 100755
--- a/Tools/scripts/fixcid.py
+++ b/Tools/scripts/fixcid.py
@@ -97,7 +97,7 @@
     bad = 0
     try:
         names = os.listdir(dirname)
-    except os.error as msg:
+    except OSError as msg:
         err(dirname + ': cannot list directory: ' + str(msg) + '\n')
         return 1
     names.sort()
@@ -175,17 +175,17 @@
     try:
         statbuf = os.stat(filename)
         os.chmod(tempname, statbuf[ST_MODE] & 0o7777)
-    except os.error as msg:
+    except OSError 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 as msg:
+    except OSError 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 as msg:
+    except OSError as msg:
         err(filename + ': rename failed (' + str(msg) + ')\n')
         return 1
     # Return success
diff --git a/Tools/scripts/ftpmirror.py b/Tools/scripts/ftpmirror.py
index 9e8be1d..a1b683a 100755
--- a/Tools/scripts/ftpmirror.py
+++ b/Tools/scripts/ftpmirror.py
@@ -108,7 +108,7 @@
         if verbose: print('Creating local directory', repr(localdir))
         try:
             makedir(localdir)
-        except os.error as msg:
+        except OSError as msg:
             print("Failed to establish local directory", repr(localdir))
             return
     infofilename = os.path.join(localdir, '.mirrorinfo')
@@ -183,7 +183,7 @@
                 continue
         try:
             os.unlink(tempname)
-        except os.error:
+        except OSError:
             pass
         if mode[0] == 'l':
             if verbose:
@@ -218,11 +218,11 @@
                 fp1.close()
         try:
             os.unlink(fullname)
-        except os.error:
+        except OSError:
             pass            # Ignore the error
         try:
             os.rename(tempname, fullname)
-        except os.error as msg:
+        except OSError as msg:
             print("Can't rename %r to %r: %s" % (tempname, fullname, msg))
             continue
         info[filename] = infostuff
@@ -255,7 +255,7 @@
     try:
         if not localdir: names = os.listdir(os.curdir)
         else: names = os.listdir(localdir)
-    except os.error:
+    except OSError:
         names = []
     for name in names:
         if name[0] == '.' or name in info or name in subdirs:
@@ -312,7 +312,7 @@
     if os.path.isdir(fullname) and not os.path.islink(fullname):
         try:
             names = os.listdir(fullname)
-        except os.error:
+        except OSError:
             names = []
         ok = 1
         for name in names:
@@ -322,13 +322,13 @@
             return 0
         try:
             os.rmdir(fullname)
-        except os.error as msg:
+        except OSError as msg:
             print("Can't remove local directory %r: %s" % (fullname, msg))
             return 0
     else:
         try:
             os.unlink(fullname)
-        except os.error as msg:
+        except OSError as msg:
             print("Can't remove local file %r: %s" % (fullname, msg))
             return 0
     return 1
@@ -386,7 +386,7 @@
     backup = os.path.join(dir, fname + '~')
     try:
         os.unlink(backup)
-    except os.error:
+    except OSError:
         pass
     fp = open(tempname, 'w')
     fp.write('{\n')
@@ -396,7 +396,7 @@
     fp.close()
     try:
         os.rename(filename, backup)
-    except os.error:
+    except OSError:
         pass
     os.rename(tempname, filename)
 
diff --git a/Tools/scripts/linktree.py b/Tools/scripts/linktree.py
index 982f480..e83f198 100755
--- a/Tools/scripts/linktree.py
+++ b/Tools/scripts/linktree.py
@@ -32,13 +32,13 @@
         return 1
     try:
         os.mkdir(newtree, 0o777)
-    except os.error as msg:
+    except OSError 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 as msg:
+    except OSError 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 as msg:
+    except OSError as msg:
         print(old + ': warning: cannot listdir:', msg)
         return
     for name in names:
diff --git a/Tools/scripts/pathfix.py b/Tools/scripts/pathfix.py
index dd08e0a..ae15561 100755
--- a/Tools/scripts/pathfix.py
+++ b/Tools/scripts/pathfix.py
@@ -73,7 +73,7 @@
     bad = 0
     try:
         names = os.listdir(dirname)
-    except os.error as msg:
+    except OSError as msg:
         err('%s: cannot list directory: %r\n' % (dirname, msg))
         return 1
     names.sort()
@@ -131,24 +131,24 @@
         mtime = statbuf.st_mtime
         atime = statbuf.st_atime
         os.chmod(tempname, statbuf[ST_MODE] & 0o7777)
-    except os.error as msg:
+    except OSError 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 as msg:
+    except OSError 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 as msg:
+    except OSError as msg:
         err('%s: rename failed (%r)\n' % (filename, msg))
         return 1
     if preserve_timestamps:
         if atime and mtime:
             try:
                 os.utime(filename, (atime, mtime))
-            except os.error as msg:
+            except OSError as msg:
                 err('%s: reset of timestamp failed (%r)\n' % (filename, msg))
                 return 1
     # Return succes
diff --git a/Tools/scripts/pindent.py b/Tools/scripts/pindent.py
index 15b6399..0151773 100755
--- a/Tools/scripts/pindent.py
+++ b/Tools/scripts/pindent.py
@@ -427,7 +427,7 @@
     # end if
     import os
     try: os.rename(filename, filename + '~')
-    except os.error: pass
+    except OSError: pass
     # end try
     f = open(filename, 'w')
     f.write(result)
@@ -442,7 +442,7 @@
     # end if
     import os
     try: os.rename(filename, filename + '~')
-    except os.error: pass
+    except OSError: pass
     # end try
     f = open(filename, 'w')
     f.write(result)
@@ -457,7 +457,7 @@
     # end if
     import os
     try: os.rename(filename, filename + '~')
-    except os.error: pass
+    except OSError: pass
     # end try
     f = open(filename, 'w')
     f.write(result)
diff --git a/Tools/scripts/treesync.py b/Tools/scripts/treesync.py
index b2649c4..652d394 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 as msg:
+        except OSError 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 4b67c15..861c83c 100755
--- a/Tools/scripts/untabify.py
+++ b/Tools/scripts/untabify.py
@@ -39,11 +39,11 @@
     backup = filename + "~"
     try:
         os.unlink(backup)
-    except os.error:
+    except OSError:
         pass
     try:
         os.rename(filename, backup)
-    except os.error:
+    except OSError:
         pass
     with open(filename, "w", encoding=encoding) as f:
         f.write(newtext)
diff --git a/Tools/scripts/which.py b/Tools/scripts/which.py
index 4fc37a0..df54ce0 100755
--- a/Tools/scripts/which.py
+++ b/Tools/scripts/which.py
@@ -29,7 +29,7 @@
             filename = os.path.join(dir, prog)
             try:
                 st = os.stat(filename)
-            except os.error:
+            except OSError:
                 continue
             if not S_ISREG(st[ST_MODE]):
                 msg(filename + ': not a disk file')