Rename 'unicode' to 'str' in its tp_name field. Rename 'str' to 'str8'.
Change all occurrences of unichr to chr.
diff --git a/Lib/sre_parse.py b/Lib/sre_parse.py
index 49dc080..d53d37c 100644
--- a/Lib/sre_parse.py
+++ b/Lib/sre_parse.py
@@ -712,7 +712,7 @@
     if type(sep) is type(""):
         makechar = chr
     else:
-        makechar = unichr
+        makechar = chr
     while 1:
         this = sget()
         if this is None: