Issue #18050: Fixed an incompatibility of the re module with Python 3.3.0

binaries.

Lib/sre_compile.py

@@ -13,7 +13,6 @@
 import _sre, sys
 import sre_parse
 from sre_constants import *
-from _sre import MAXREPEAT
 
 assert _sre.MAGIC == MAGIC, "SRE module mismatch"
 

Lib/sre_constants.py

@@ -15,7 +15,11 @@
 
 MAGIC = 20031017
 
-from _sre import MAXREPEAT
+try:
+    from _sre import MAXREPEAT
+except ImportError:
+    import _sre
+    MAXREPEAT = _sre.MAXREPEAT = 65535
 
 # SRE standard exception (access as sre.error)
 # should this really be here?

Lib/sre_parse.py

@@ -15,7 +15,6 @@
 import sys
 
 from sre_constants import *
-from _sre import MAXREPEAT
 
 SPECIAL_CHARS = ".\\[{()*+?^$|"
 REPEAT_CHARS = "*+?{"

Misc/NEWS

@@ -68,6 +68,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #18050: Fixed an incompatibility of the re module with Python 3.3.0
+  binaries.
+
 - Issue #19037: The mailbox module now makes all changes to maildir files
   before moving them into place, to avoid race conditions with other programs
   that may be accessing the maildir directory.