import pickle
from collections import namedtuple

Point = namedtuple('Point', 'x y z')

p_before = Point(10, 20, 30)
before = pickle.dumps(p_before, 0)
print '** Before fix'
print '* Dump'
print
print before
print
print '* Load'
print pickle.loads(before)
print
print

# Prevent pickle protocol 0 from dumping OrderedDict.
# Introduced in:
# http://hg.python.org/cpython/diff/26d5f022eb1a/Lib/collections.py
# Also relevant:
# http://bugs.python.org/issue3065
# http://hg.python.org/cpython/rev/246a802637ad/
Point.__getstate__ = lambda _: None

p_after = Point(10, 20, 30)
after = pickle.dumps(p_after, 0)
print '** After fix'
print '* Dump'
print
print after
print
print '* Load'
print pickle.loads(after)
print
print

assert pickle.loads(before) == pickle.loads(after)
print 'ok'