Raymond Hettinger added the comment:

I reviewed re_named_consts.patch and it looks great (I especially like the 
removal of superfluous OPCODES dictionary lookups and improved repr for the 
integer codes).

Since the op codes are singletons, you can use identity tests instead of 
equality checks in sre_parse.py:

  -      if op == "in":
  +      if op == IN:

Also, I'll echo the suggestion to make NamedIntConstant private with a leading 
underscore.

Nice work.

----------
nosy: +rhettinger

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<http://bugs.python.org/issue22434>
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