On Mon, Dec 27, 2010 at 11:52 AM, Terry Reedy <tjreedy at udel.edu> wrote: > Return a converted to an integer. Equivalent to a.__index__()." > comes close to implying equality (if possible). > > What are the actual used of .__index__? PEP 357 gives the original rationale - it was to allow integer-like objects (such as numpy scalars) to be used as sequence indices, as well as slice parameters. I would have to grep the source to get a full list of uses, but I believe it is already used in at least those two cases, as well as for sequence repetition (via '*') and to identify permitted inputs to bin/oct/hex. Cheers, Nick. -- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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