diff --git a/Lib/doctest.py b/Lib/doctest.py
--- a/Lib/doctest.py
+++ b/Lib/doctest.py
@@ -542,7 +542,7 @@
 
     # A callable returning a true value iff its argument is a blank line
     # or contains a single comment.
-    _IS_BLANK_OR_COMMENT = re.compile(r'^[ ]*(#.*)?$').match
+    _IS_BLANK_OR_COMMENT = staticmethod(re.compile(r'^[ ]*(#.*)?$').match)
 
     def parse(self, string, name='<string>'):
         """
diff --git a/Lib/encodings/ascii.py b/Lib/encodings/ascii.py
--- a/Lib/encodings/ascii.py
+++ b/Lib/encodings/ascii.py
@@ -14,8 +14,8 @@
 
     # Note: Binding these as C functions will result in the class not
     # converting them to methods. This is intended.
-    encode = codecs.ascii_encode
-    decode = codecs.ascii_decode
+    encode = staticmethod(codecs.ascii_encode)
+    decode = staticmethod(codecs.ascii_decode)
 
 class IncrementalEncoder(codecs.IncrementalEncoder):
     def encode(self, input, final=False):
@@ -33,8 +33,8 @@
 
 class StreamConverter(StreamWriter,StreamReader):
 
-    encode = codecs.ascii_decode
-    decode = codecs.ascii_encode
+    encode = staticmethod(codecs.ascii_decode)
+    decode = staticmethod(codecs.ascii_encode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/big5.py b/Lib/encodings/big5.py
--- a/Lib/encodings/big5.py
+++ b/Lib/encodings/big5.py
@@ -10,8 +10,8 @@
 codec = _codecs_tw.getcodec('big5')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/big5hkscs.py b/Lib/encodings/big5hkscs.py
--- a/Lib/encodings/big5hkscs.py
+++ b/Lib/encodings/big5hkscs.py
@@ -10,8 +10,8 @@
 codec = _codecs_hk.getcodec('big5hkscs')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/charmap.py b/Lib/encodings/charmap.py
--- a/Lib/encodings/charmap.py
+++ b/Lib/encodings/charmap.py
@@ -18,8 +18,8 @@
 
     # Note: Binding these as C functions will result in the class not
     # converting them to methods. This is intended.
-    encode = codecs.charmap_encode
-    decode = codecs.charmap_decode
+    encode = staticmethod(codecs.charmap_encode)
+    decode = staticmethod(codecs.charmap_decode)
 
 class IncrementalEncoder(codecs.IncrementalEncoder):
     def __init__(self, errors='strict', mapping=None):
diff --git a/Lib/encodings/cp932.py b/Lib/encodings/cp932.py
--- a/Lib/encodings/cp932.py
+++ b/Lib/encodings/cp932.py
@@ -10,8 +10,8 @@
 codec = _codecs_jp.getcodec('cp932')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/cp949.py b/Lib/encodings/cp949.py
--- a/Lib/encodings/cp949.py
+++ b/Lib/encodings/cp949.py
@@ -10,8 +10,8 @@
 codec = _codecs_kr.getcodec('cp949')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/cp950.py b/Lib/encodings/cp950.py
--- a/Lib/encodings/cp950.py
+++ b/Lib/encodings/cp950.py
@@ -10,8 +10,8 @@
 codec = _codecs_tw.getcodec('cp950')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/euc_jis_2004.py b/Lib/encodings/euc_jis_2004.py
--- a/Lib/encodings/euc_jis_2004.py
+++ b/Lib/encodings/euc_jis_2004.py
@@ -10,8 +10,8 @@
 codec = _codecs_jp.getcodec('euc_jis_2004')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/euc_jisx0213.py b/Lib/encodings/euc_jisx0213.py
--- a/Lib/encodings/euc_jisx0213.py
+++ b/Lib/encodings/euc_jisx0213.py
@@ -10,8 +10,8 @@
 codec = _codecs_jp.getcodec('euc_jisx0213')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/euc_jp.py b/Lib/encodings/euc_jp.py
--- a/Lib/encodings/euc_jp.py
+++ b/Lib/encodings/euc_jp.py
@@ -10,8 +10,8 @@
 codec = _codecs_jp.getcodec('euc_jp')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/euc_kr.py b/Lib/encodings/euc_kr.py
--- a/Lib/encodings/euc_kr.py
+++ b/Lib/encodings/euc_kr.py
@@ -10,8 +10,8 @@
 codec = _codecs_kr.getcodec('euc_kr')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/gb18030.py b/Lib/encodings/gb18030.py
--- a/Lib/encodings/gb18030.py
+++ b/Lib/encodings/gb18030.py
@@ -10,8 +10,8 @@
 codec = _codecs_cn.getcodec('gb18030')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/gb2312.py b/Lib/encodings/gb2312.py
--- a/Lib/encodings/gb2312.py
+++ b/Lib/encodings/gb2312.py
@@ -10,8 +10,8 @@
 codec = _codecs_cn.getcodec('gb2312')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/gbk.py b/Lib/encodings/gbk.py
--- a/Lib/encodings/gbk.py
+++ b/Lib/encodings/gbk.py
@@ -10,8 +10,8 @@
 codec = _codecs_cn.getcodec('gbk')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/hz.py b/Lib/encodings/hz.py
--- a/Lib/encodings/hz.py
+++ b/Lib/encodings/hz.py
@@ -10,8 +10,8 @@
 codec = _codecs_cn.getcodec('hz')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/iso2022_jp.py b/Lib/encodings/iso2022_jp.py
--- a/Lib/encodings/iso2022_jp.py
+++ b/Lib/encodings/iso2022_jp.py
@@ -10,8 +10,8 @@
 codec = _codecs_iso2022.getcodec('iso2022_jp')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/iso2022_jp_1.py b/Lib/encodings/iso2022_jp_1.py
--- a/Lib/encodings/iso2022_jp_1.py
+++ b/Lib/encodings/iso2022_jp_1.py
@@ -10,8 +10,8 @@
 codec = _codecs_iso2022.getcodec('iso2022_jp_1')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/iso2022_jp_2.py b/Lib/encodings/iso2022_jp_2.py
--- a/Lib/encodings/iso2022_jp_2.py
+++ b/Lib/encodings/iso2022_jp_2.py
@@ -10,8 +10,8 @@
 codec = _codecs_iso2022.getcodec('iso2022_jp_2')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/iso2022_jp_2004.py b/Lib/encodings/iso2022_jp_2004.py
--- a/Lib/encodings/iso2022_jp_2004.py
+++ b/Lib/encodings/iso2022_jp_2004.py
@@ -10,8 +10,8 @@
 codec = _codecs_iso2022.getcodec('iso2022_jp_2004')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/iso2022_jp_3.py b/Lib/encodings/iso2022_jp_3.py
--- a/Lib/encodings/iso2022_jp_3.py
+++ b/Lib/encodings/iso2022_jp_3.py
@@ -10,8 +10,8 @@
 codec = _codecs_iso2022.getcodec('iso2022_jp_3')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/iso2022_jp_ext.py b/Lib/encodings/iso2022_jp_ext.py
--- a/Lib/encodings/iso2022_jp_ext.py
+++ b/Lib/encodings/iso2022_jp_ext.py
@@ -10,8 +10,8 @@
 codec = _codecs_iso2022.getcodec('iso2022_jp_ext')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/iso2022_kr.py b/Lib/encodings/iso2022_kr.py
--- a/Lib/encodings/iso2022_kr.py
+++ b/Lib/encodings/iso2022_kr.py
@@ -10,8 +10,8 @@
 codec = _codecs_iso2022.getcodec('iso2022_kr')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/johab.py b/Lib/encodings/johab.py
--- a/Lib/encodings/johab.py
+++ b/Lib/encodings/johab.py
@@ -10,8 +10,8 @@
 codec = _codecs_kr.getcodec('johab')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/latin_1.py b/Lib/encodings/latin_1.py
--- a/Lib/encodings/latin_1.py
+++ b/Lib/encodings/latin_1.py
@@ -14,8 +14,8 @@
 
     # Note: Binding these as C functions will result in the class not
     # converting them to methods. This is intended.
-    encode = codecs.latin_1_encode
-    decode = codecs.latin_1_decode
+    encode = staticmethod(codecs.latin_1_encode)
+    decode = staticmethod(codecs.latin_1_decode)
 
 class IncrementalEncoder(codecs.IncrementalEncoder):
     def encode(self, input, final=False):
@@ -33,8 +33,8 @@
 
 class StreamConverter(StreamWriter,StreamReader):
 
-    encode = codecs.latin_1_decode
-    decode = codecs.latin_1_encode
+    encode = staticmethod(codecs.latin_1_decode)
+    decode = staticmethod(codecs.latin_1_encode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/mbcs.py b/Lib/encodings/mbcs.py
--- a/Lib/encodings/mbcs.py
+++ b/Lib/encodings/mbcs.py
@@ -25,13 +25,13 @@
         return mbcs_encode(input, self.errors)[0]
 
 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
-    _buffer_decode = mbcs_decode
+    _buffer_decode = staticmethod(mbcs_decode)
 
 class StreamWriter(codecs.StreamWriter):
-    encode = mbcs_encode
+    encode = staticmethod(mbcs_encode)
 
 class StreamReader(codecs.StreamReader):
-    decode = mbcs_decode
+    decode = staticmethod(mbcs_decode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/raw_unicode_escape.py b/Lib/encodings/raw_unicode_escape.py
--- a/Lib/encodings/raw_unicode_escape.py
+++ b/Lib/encodings/raw_unicode_escape.py
@@ -14,8 +14,8 @@
 
     # Note: Binding these as C functions will result in the class not
     # converting them to methods. This is intended.
-    encode = codecs.raw_unicode_escape_encode
-    decode = codecs.raw_unicode_escape_decode
+    encode = staticmethod(codecs.raw_unicode_escape_encode)
+    decode = staticmethod(codecs.raw_unicode_escape_decode)
 
 class IncrementalEncoder(codecs.IncrementalEncoder):
     def encode(self, input, final=False):
diff --git a/Lib/encodings/shift_jis.py b/Lib/encodings/shift_jis.py
--- a/Lib/encodings/shift_jis.py
+++ b/Lib/encodings/shift_jis.py
@@ -10,8 +10,8 @@
 codec = _codecs_jp.getcodec('shift_jis')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/shift_jis_2004.py b/Lib/encodings/shift_jis_2004.py
--- a/Lib/encodings/shift_jis_2004.py
+++ b/Lib/encodings/shift_jis_2004.py
@@ -10,8 +10,8 @@
 codec = _codecs_jp.getcodec('shift_jis_2004')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/shift_jisx0213.py b/Lib/encodings/shift_jisx0213.py
--- a/Lib/encodings/shift_jisx0213.py
+++ b/Lib/encodings/shift_jisx0213.py
@@ -10,8 +10,8 @@
 codec = _codecs_jp.getcodec('shift_jisx0213')
 
 class Codec(codecs.Codec):
-    encode = codec.encode
-    decode = codec.decode
+    encode = staticmethod(codec.encode)
+    decode = staticmethod(codec.decode)
 
 class IncrementalEncoder(mbc.MultibyteIncrementalEncoder,
                          codecs.IncrementalEncoder):
diff --git a/Lib/encodings/unicode_escape.py b/Lib/encodings/unicode_escape.py
--- a/Lib/encodings/unicode_escape.py
+++ b/Lib/encodings/unicode_escape.py
@@ -14,8 +14,8 @@
 
     # Note: Binding these as C functions will result in the class not
     # converting them to methods. This is intended.
-    encode = codecs.unicode_escape_encode
-    decode = codecs.unicode_escape_decode
+    encode = staticmethod(codecs.unicode_escape_encode)
+    decode = staticmethod(codecs.unicode_escape_decode)
 
 class IncrementalEncoder(codecs.IncrementalEncoder):
     def encode(self, input, final=False):
diff --git a/Lib/encodings/unicode_internal.py b/Lib/encodings/unicode_internal.py
--- a/Lib/encodings/unicode_internal.py
+++ b/Lib/encodings/unicode_internal.py
@@ -14,8 +14,8 @@
 
     # Note: Binding these as C functions will result in the class not
     # converting them to methods. This is intended.
-    encode = codecs.unicode_internal_encode
-    decode = codecs.unicode_internal_decode
+    encode = staticmethod(codecs.unicode_internal_encode)
+    decode = staticmethod(codecs.unicode_internal_decode)
 
 class IncrementalEncoder(codecs.IncrementalEncoder):
     def encode(self, input, final=False):
diff --git a/Lib/encodings/utf_16_be.py b/Lib/encodings/utf_16_be.py
--- a/Lib/encodings/utf_16_be.py
+++ b/Lib/encodings/utf_16_be.py
@@ -20,13 +20,13 @@
         return codecs.utf_16_be_encode(input, self.errors)[0]
 
 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
-    _buffer_decode = codecs.utf_16_be_decode
+    _buffer_decode = staticmethod(codecs.utf_16_be_decode)
 
 class StreamWriter(codecs.StreamWriter):
-    encode = codecs.utf_16_be_encode
+    encode = staticmethod(codecs.utf_16_be_encode)
 
 class StreamReader(codecs.StreamReader):
-    decode = codecs.utf_16_be_decode
+    decode = staticmethod(codecs.utf_16_be_decode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/utf_16_le.py b/Lib/encodings/utf_16_le.py
--- a/Lib/encodings/utf_16_le.py
+++ b/Lib/encodings/utf_16_le.py
@@ -20,13 +20,13 @@
         return codecs.utf_16_le_encode(input, self.errors)[0]
 
 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
-    _buffer_decode = codecs.utf_16_le_decode
+    _buffer_decode = staticmethod(codecs.utf_16_le_decode)
 
 class StreamWriter(codecs.StreamWriter):
-    encode = codecs.utf_16_le_encode
+    encode = staticmethod(codecs.utf_16_le_encode)
 
 class StreamReader(codecs.StreamReader):
-    decode = codecs.utf_16_le_decode
+    decode = staticmethod(codecs.utf_16_le_decode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/utf_32_be.py b/Lib/encodings/utf_32_be.py
--- a/Lib/encodings/utf_32_be.py
+++ b/Lib/encodings/utf_32_be.py
@@ -15,13 +15,13 @@
         return codecs.utf_32_be_encode(input, self.errors)[0]
 
 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
-    _buffer_decode = codecs.utf_32_be_decode
+    _buffer_decode = staticmethod(codecs.utf_32_be_decode)
 
 class StreamWriter(codecs.StreamWriter):
-    encode = codecs.utf_32_be_encode
+    encode = staticmethod(codecs.utf_32_be_encode)
 
 class StreamReader(codecs.StreamReader):
-    decode = codecs.utf_32_be_decode
+    decode = staticmethod(codecs.utf_32_be_decode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/utf_32_le.py b/Lib/encodings/utf_32_le.py
--- a/Lib/encodings/utf_32_le.py
+++ b/Lib/encodings/utf_32_le.py
@@ -15,13 +15,13 @@
         return codecs.utf_32_le_encode(input, self.errors)[0]
 
 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
-    _buffer_decode = codecs.utf_32_le_decode
+    _buffer_decode = staticmethod(codecs.utf_32_le_decode)
 
 class StreamWriter(codecs.StreamWriter):
-    encode = codecs.utf_32_le_encode
+    encode = staticmethod(codecs.utf_32_le_encode)
 
 class StreamReader(codecs.StreamReader):
-    decode = codecs.utf_32_le_decode
+    decode = staticmethod(codecs.utf_32_le_decode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/utf_7.py b/Lib/encodings/utf_7.py
--- a/Lib/encodings/utf_7.py
+++ b/Lib/encodings/utf_7.py
@@ -16,13 +16,13 @@
         return codecs.utf_7_encode(input, self.errors)[0]
 
 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
-    _buffer_decode = codecs.utf_7_decode
+    _buffer_decode = staticmethod(codecs.utf_7_decode)
 
 class StreamWriter(codecs.StreamWriter):
-    encode = codecs.utf_7_encode
+    encode = staticmethod(codecs.utf_7_encode)
 
 class StreamReader(codecs.StreamReader):
-    decode = codecs.utf_7_decode
+    decode = staticmethod(codecs.utf_7_decode)
 
 ### encodings module API
 
diff --git a/Lib/encodings/utf_8.py b/Lib/encodings/utf_8.py
--- a/Lib/encodings/utf_8.py
+++ b/Lib/encodings/utf_8.py
@@ -20,13 +20,13 @@
         return codecs.utf_8_encode(input, self.errors)[0]
 
 class IncrementalDecoder(codecs.BufferedIncrementalDecoder):
-    _buffer_decode = codecs.utf_8_decode
+    _buffer_decode = staticmethod(codecs.utf_8_decode)
 
 class StreamWriter(codecs.StreamWriter):
-    encode = codecs.utf_8_encode
+    encode = staticmethod(codecs.utf_8_encode)
 
 class StreamReader(codecs.StreamReader):
-    decode = codecs.utf_8_decode
+    decode = staticmethod(codecs.utf_8_decode)
 
 ### encodings module API
 
diff --git a/Lib/tempfile.py b/Lib/tempfile.py
--- a/Lib/tempfile.py
+++ b/Lib/tempfile.py
@@ -380,7 +380,7 @@
         # that this must be referenced as self.unlink, because the
         # name TemporaryFileWrapper may also get None'd out before
         # __del__ is called.
-        unlink = _os.unlink
+        unlink = staticmethod(_os.unlink)
 
         def close(self):
             if not self.close_called:
@@ -663,8 +663,8 @@
     _isdir = staticmethod(_os.path.isdir)
     _remove = staticmethod(_os.remove)
     _rmdir = staticmethod(_os.rmdir)
-    _os_error = _os.error
-    _warn = _warnings.warn
+    _os_error = staticmethod(_os.error)
+    _warn = staticmethod(_warnings.warn)
 
     def _rmtree(self, path):
         # Essentially a stripped down version of shutil.rmtree.  We can't
diff --git a/Lib/test/test_bufio.py b/Lib/test/test_bufio.py
--- a/Lib/test/test_bufio.py
+++ b/Lib/test/test_bufio.py
@@ -63,7 +63,7 @@
 
 
 class CBufferSizeTest(BufferSizeTest):
-    open = io.open
+    open = staticmethod(io.open)
 
 class PyBufferSizeTest(BufferSizeTest):
     open = staticmethod(pyio.open)
diff --git a/Lib/test/test_file.py b/Lib/test/test_file.py
--- a/Lib/test/test_file.py
+++ b/Lib/test/test_file.py
@@ -129,7 +129,7 @@
         self.assertRaises(IOError, self.f.read)
 
 class CAutoFileTests(AutoFileTests):
-    open = io.open
+    open = staticmethod(io.open)
 
 class PyAutoFileTests(AutoFileTests):
     open = staticmethod(pyio.open)
@@ -323,7 +323,7 @@
             os.unlink(TESTFN)
 
 class COtherFileTests(OtherFileTests):
-    open = io.open
+    open = staticmethod(io.open)
 
 class PyOtherFileTests(OtherFileTests):
     open = staticmethod(pyio.open)
diff --git a/Lib/test/test_functools.py b/Lib/test/test_functools.py
--- a/Lib/test/test_functools.py
+++ b/Lib/test/test_functools.py
@@ -355,7 +355,7 @@
         self.assertEqual(wrapper.dict_attr, f.dict_attr)
 
 class TestReduce(unittest.TestCase):
-    func = functools.reduce
+    func = staticmethod(functools.reduce)
 
     def test_reduce(self):
         class Squares:
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -2833,7 +2833,8 @@
     c_io_ns.update((x.__name__, globs["C" + x.__name__]) for x in mocks)
     py_io_ns.update((x.__name__, globs["Py" + x.__name__]) for x in mocks)
     # Avoid turning open into a bound method.
-    py_io_ns["open"] = pyio.OpenWrapper
+    c_io_ns["open"] = staticmethod(io.open)
+    py_io_ns["open"] = staticmethod(pyio.open)
     for test in tests:
         if test.__name__.startswith("C"):
             for name, obj in c_io_ns.items():
diff --git a/Lib/test/test_thread.py b/Lib/test/test_thread.py
--- a/Lib/test/test_thread.py
+++ b/Lib/test/test_thread.py
@@ -191,7 +191,7 @@
             self.done_mutex.release()
 
 class LockTests(lock_tests.LockTests):
-    locktype = thread.allocate_lock
+    locktype = staticmethod(thread.allocate_lock)
 
 
 class TestForkInThread(unittest.TestCase):
diff --git a/Lib/test/test_univnewlines.py b/Lib/test/test_univnewlines.py
--- a/Lib/test/test_univnewlines.py
+++ b/Lib/test/test_univnewlines.py
@@ -115,7 +115,7 @@
     # Test the C and Python implementations.
     for test in base_tests:
         class CTest(test):
-            open = io.open
+            open = staticmethod(io.open)
         CTest.__name__ = "C" + test.__name__
         class PyTest(test):
             open = staticmethod(pyio.open)
diff --git a/Lib/test/test_urllib2.py b/Lib/test/test_urllib2.py
--- a/Lib/test/test_urllib2.py
+++ b/Lib/test/test_urllib2.py
@@ -257,6 +257,8 @@
         self.action = action
     def __call__(self, *args):
         return self.handle(self.meth_name, self.action, *args)
+    def __get__(self, inst, inst_type=None):
+        return self
 
 class MockHTTPResponse(io.IOBase):
     def __init__(self, fp, msg, status, reason):
diff --git a/Objects/object.c b/Objects/object.c
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -1029,6 +1029,14 @@
     }
 
     if (descr != NULL) {
+        if (PyCallable_Check(descr) && !PyType_Check(descr)) {
+            if (PyErr_WarnFormat(PyExc_DeprecationWarning, 1,
+                                 "callable, non-descriptor class "
+                                 "attribute %R of %R", name, obj) < 0) {
+                Py_DECREF(descr);
+                goto done;
+            }
+        }
         res = descr;
         /* descr was already increfed above */
         goto done;