diff --git a/Doc/includes/email-unpack.py b/Doc/includes/email-unpack.py
index daf2470..8f99ded 100644
--- a/Doc/includes/email-unpack.py
+++ b/Doc/includes/email-unpack.py
@@ -37,7 +37,7 @@
         os.mkdir(opts.directory)
     except OSError, e:
         # Ignore directory exists error
-        if e.errno <> errno.EEXIST:
+        if e.errno != errno.EEXIST:
             raise
 
     fp = open(msgfile)
diff --git a/Doc/includes/mp_pool.py b/Doc/includes/mp_pool.py
index 9e89cbc..0a3d92a 100644
--- a/Doc/includes/mp_pool.py
+++ b/Doc/includes/mp_pool.py
@@ -149,21 +149,21 @@
     except ZeroDivisionError:
         print '\tGot ZeroDivisionError as expected from pool.apply()'
     else:
-        raise AssertionError, 'expected ZeroDivisionError'
+        raise AssertionError('expected ZeroDivisionError')
 
     try:
         print pool.map(f, range(10))
     except ZeroDivisionError:
         print '\tGot ZeroDivisionError as expected from pool.map()'
     else:
-        raise AssertionError, 'expected ZeroDivisionError'
+        raise AssertionError('expected ZeroDivisionError')
 
     try:
         print list(pool.imap(f, range(10)))
     except ZeroDivisionError:
         print '\tGot ZeroDivisionError as expected from list(pool.imap())'
     else:
-        raise AssertionError, 'expected ZeroDivisionError'
+        raise AssertionError('expected ZeroDivisionError')
 
     it = pool.imap(f, range(10))
     for i in range(10):
@@ -176,7 +176,7 @@
             break
         else:
             if i == 5:
-                raise AssertionError, 'expected ZeroDivisionError'
+                raise AssertionError('expected ZeroDivisionError')
 
     assert i == 9
     print '\tGot ZeroDivisionError as expected from IMapIterator.next()'
diff --git a/Doc/includes/mp_synchronize.py b/Doc/includes/mp_synchronize.py
index 2f43ad8..fd2ae77 100644
--- a/Doc/includes/mp_synchronize.py
+++ b/Doc/includes/mp_synchronize.py
@@ -249,7 +249,7 @@
         info = multiprocessing._debug_info()
         if info:
             print info
-            raise ValueError, 'there should be no positive refcounts left'
+            raise ValueError('there should be no positive refcounts left')
 
 
 if __name__ == '__main__':
@@ -271,6 +271,6 @@
         import multiprocessing.dummy as namespace
     else:
         print 'Usage:\n\t%s [processes | manager | threads]' % sys.argv[0]
-        raise SystemExit, 2
+        raise SystemExit(2)
 
     test(namespace)