Terry Reedy wrote:
Boris Borcic wrote:
...
- allowing containment tests, ie "x in Number" to invoke isinstance()
in the background when the container is of type <type>. My brain is
too muddled by flu at the moment, to see whether Guido's fabled time
machine allowed him to already provide all the necessities in py26.
Any takers ?
I believe this could be done by adding a __contains__ method to type.
(It does not have one now). Then x in X should work for all classes
that are instances of type or a subclass thereof.
Can this be done short of patching the source and recompiling (eg, with ctypes
perhaps) ?
Cheers, BB
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