Neil Girdhar <mistersh...@gmail.com> added the comment:

> The code generated by oollections.namedtuple was based on patterns already in 
> widespread use at the time.

That's fair enough.  However, it seems like there is one important difference: 
unlike any other Sequence, namedtuples cannot be initialized with an iterable.

For that reason, I like Eric's option of checking for the _fields member rather 
than special-casing list and tuple since it seems like namedtuple is the 
special case.

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue34363>
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