[issue28638] Optimize namedtuple creation

[STINNER Victor]

STINNER Victor added the comment:

> So structseq is 1.9x faster than namedtuple to get an attribute by name.

Oops, I wrote it backward: So namedtuple is 1.9x slower than structseq to get an attribute by name.

(1.9x slower doesn't mean 1.9x faster, sorry.)

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue28638>
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