[Python-Dev] __contains__ hook

[Fred L. Drake, Jr.]

Guido van Rossum writes:
 > But they won't have to -- all the other pointers in the as_sequence
 > struct can be NULL.  (This used to be not the case, but I've finally
 > given in and added NULL tests everywhere -- it was a recurring
 > complaint from extension writers.)

  Good enough; sounds like the thing to do is to declare a set to be
an sequence that supports sq_contains, sets a flag in tp_flag, and
doesn't support the irrelevant slots in the sequence structure.


  -Fred

--
Fred L. Drake, Jr.	  <fdrake at acm.org>
Corporation for National Research Initiatives