itertools_tee_error.py

#!/usr/bin/env python


from itertools import *

r = islice(count(), 5)
i1, i2 = tee(r)

print 'r:',
for i in r:
    print i,
    if i > 1:
        break

print

print 'i1:', list(i1)
print 'i2:', list(i2)