xslice idea | a generator slice

Thu Jul 11 10:54:35 EDT 2013

...oh and here is the class I made for it.
class xslice(object):
 '''
 xslice(seq, start, stop, step) -> generator slice
 '''
 def __init__(self, seq, *stop):
 if len(stop) > 3:
 raise TypeError("xslice takes at most 4 arguments")
 elif len(stop) < 0:
 raise TypeError("xslice requires atleast 2 arguments")
 else:
 start, stop, step = (((0,) + stop[:2])[-2:] + # start, stop
 (stop[2:] + (1,))[:1]) # step
 stop = min(stop, len(seq))
 self._ind = iter(xrange(start, stop, step))
 self._seq = seq
 def __iter__(self):
 return self
 def next(self):
 return self._seq[self._ind.next()]
Although now that I think about it, it probably should've just been a simple generator function.