Merged revisions 62021,62029,62035-62038,62043-62044,62052-62053 via svnmerge from

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r62021 | benjamin.peterson | 2008-03-28 18:11:01 -0500 (Fri, 28 Mar 2008) | 2 lines

  NIL => NULL
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  r62029 | amaury.forgeotdarc | 2008-03-28 20:42:31 -0500 (Fri, 28 Mar 2008) | 3 lines

  Correctly call the base class tearDown();
  otherwise running test_logging twice produce the errors we see on all buildbots
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  r62035 | raymond.hettinger | 2008-03-29 05:42:07 -0500 (Sat, 29 Mar 2008) | 1 line

  Be explicit about what efficient means.
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  r62036 | georg.brandl | 2008-03-29 06:46:18 -0500 (Sat, 29 Mar 2008) | 2 lines

  Fix capitalization.
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  r62037 | amaury.forgeotdarc | 2008-03-29 07:42:54 -0500 (Sat, 29 Mar 2008) | 5 lines

  lib2to3 should install a logging handler only when run as a main program,
  not when used as a library.

  This may please the buildbots, which fail when test_lib2to3 is run before test_logging.
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  r62043 | benjamin.peterson | 2008-03-29 10:24:25 -0500 (Sat, 29 Mar 2008) | 3 lines

  #2503 make singletons compared with "is" not == or !=
  Thanks to Wummel for the patch
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  r62044 | gerhard.haering | 2008-03-29 14:11:52 -0500 (Sat, 29 Mar 2008) | 2 lines

  Documented the lastrowid attribute.
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  r62052 | benjamin.peterson | 2008-03-30 14:35:10 -0500 (Sun, 30 Mar 2008) | 2 lines

  Updated README regarding doc formats
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  r62053 | georg.brandl | 2008-03-30 14:41:39 -0500 (Sun, 30 Mar 2008) | 2 lines

  The other download formats will be available for 2.6 too.
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3 files changed, 6 insertions, 6 deletions

diff --git a/Lib/bsddb/dbshelve.py b/Lib/bsddb/dbshelve.py
index 3727270..7344945 100644
--- a/Lib/bsddb/dbshelve.py
+++ b/Lib/bsddb/dbshelve.py
@@ -135,7 +135,7 @@ class DBShelf(MutableMapping):
 
 
     def keys(self, txn=None):
-        if txn != None:
+        if txn is not None:
             return self.db.keys(txn)
         else:
             return self.db.keys()
@@ -161,7 +161,7 @@ class DBShelf(MutableMapping):
 
 
     def items(self, txn=None):
-        if txn != None:
+        if txn is not None:
             items = self.db.items(txn)
         else:
             items = self.db.items()
@@ -172,7 +172,7 @@ class DBShelf(MutableMapping):
         return newitems
 
     def values(self, txn=None):
-        if txn != None:
+        if txn is not None:
             values = self.db.values(txn)
         else:
             values = self.db.values()
diff --git a/Lib/bsddb/test/test_basics.py b/Lib/bsddb/test/test_basics.py
index 4e070bd..6b99cc1 100644
--- a/Lib/bsddb/test/test_basics.py
+++ b/Lib/bsddb/test/test_basics.py
@@ -366,7 +366,7 @@ class BasicTestCase(unittest.TestCase):
         else:
             if set_raises_error:
                 self.fail("expected exception")
-            if n != None:
+            if n is not None:
                 self.fail("expected None: %r" % (n,))
 
         rec = c.get_both(b'0404', self.makeData(b'0404'))
@@ -380,7 +380,7 @@ class BasicTestCase(unittest.TestCase):
         else:
             if get_raises_error:
                 self.fail("expected exception")
-            if n != None:
+            if n is not None:
                 self.fail("expected None: %r" % (n,))
 
         if self.d.get_type() == db.DB_BTREE:
diff --git a/Lib/bsddb/test/test_dbtables.py b/Lib/bsddb/test/test_dbtables.py
index 8964de8..f1328f0 100644
--- a/Lib/bsddb/test/test_dbtables.py
+++ b/Lib/bsddb/test/test_dbtables.py
@@ -328,7 +328,7 @@ class TableDBTestCase(unittest.TestCase):
         self.tdb.Insert(tabname, {'Type': b'Unknown', 'Access': b'0'})
 
         def set_type(type):
-            if type == None:
+            if type is None:
                 return b'MP3'
             return type