Raymond Hettinger added the comment:
FWIW, all pickle protocol levels are affected:
Point = colletions.namedtuple('Point', ['x', 'y', 'z'])
for proto in range(3):
pickletools.dis(dumps(Point(10, 20, 30), proto))
I'll look at the proposed fix in more detail when I get a chance -- we want to
make sure that subclasses aren't adversely affected and that there aren't any
other unintended side-effects.
----------
title: Fix pickling of named tuples in 2.7.3 (BUG) -> Fix pickling efficiency
of named tuples in 2.7.3
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<http://bugs.python.org/issue15535>
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