[issue1820] Enhance Object/structseq.c to match namedtuple and tuple api

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

Also see issue 11698

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assignee: jackdied -> rhettinger

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue1820>
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