when generators share their state

gistfile1.py

"""
This program generates the following table:

01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F

It shows what happens when two generators share the same state.

Contrast with: https://gist.github.com/3814556
"""

def each( seq ):
   """
   This does exactly what the built-in iter() function does.
   iter() is also invoked by the 'for' loop itself, so it's
   doubly redundant.
   """
   for e in seq: yield e

gen = each('0123456789ABCDEF')

for y in gen:
   for x in gen:
       print ( y + x ),
   print