import sys
import numpy as np
from numpy.random import shuffle

print 'Numpy version:', np.__version__
print 'Python version:', sys.version
print 'Platform:', sys.platform

a = np.arange(5)

for i in range(5):
    print a
    shuffle(a)

b = np.zeros(5, dtype=[('n', 'S1'), ('i', int)])
b['i']  = range(5)
print b
print b.dtype

for i in range(5):
    print b
    shuffle(b)