Shuffling a list with a numpy.random.RandomState forgets the type of list elements if they're tuples.

numpy-shuffle-demo.py

import pkg_resources
from collections import namedtuple
from numpy.random import RandomState

print pkg_resources.get_distribution("numpy").version

class Foo(namedtuple("Foo", "x")):
  pass

items = [Foo(1), Foo(2), Foo(3)]
print type(items[0])

rng = RandomState()
rng.shuffle(items)
print type(items[0])

Running numpy 1.6 in Python 2.6.4 on x86-64 Linux, the first "print type(items[0])" prints 'main.Foo', while the second prints 'tuple'. After asking in #python on Freenode, it looks like the type of the list elements isn't forgotten in numpy 1.8.0.dev-75b8119 in Python 2.7.3.