[Python-Dev] API for binary operations on Sets

Daniel Stutzbach daniel at stutzbachenterprises.com
Thu Sep 30 13:33:59 CEST 2010

On Wed, Sep 29, 2010 at 11:29 PM, Terry Reedy <tjreedy at udel.edu> wrote:

> Does this violate the Sequence ABC (assuming there is one)?

There is a Sequence ABC, but it does not define __add__.  It only defines
the following methods:
__contains__, __getitem__, __iter__, __len__, __reversed__, count, and index

tuple, range, and str types  all register as following the Sequence ABC.
list and bytearray types register as following the MutableSequence ABC,
which is a subclass of the Sequence ABC.

Daniel Stutzbach, Ph.D.
President, Stutzbach Enterprises, LLC <http://stutzbachenterprises.com/>
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