brake · April 3, 2015 08:16
diff --git a/swap_nibbles.py b/swap_nibbles.py
 def swap_nibbles(s):
    """Swap nibbles in a hex string.
    len(s) must be even otherwise ValueError will be raised.
    """
    if len(s) % 2:
        raise ValueError()
    return ''.join([y+x for x,y in zip(*[iter(s)] * 2)])
	def swap_nibbles(s):
	"""Swap nibbles in a hex string.
	len(s) must be even otherwise ValueError will be raised.
	"""
	if len(s) % 2:
	raise ValueError()
	return ''.join([y+x for x,y in zip([iter(s)] 2)])