2 ms·

And more often than not `xrange` is what one needs, not `range`. (Not relevant with Py3k though, but everyone is still in 2.x-verse.)

• lysium 15y ago
  >>> xrange(13)[::-1] Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: sequence index must be integer, not 'slice'
  • akx 15y ago
    >>> list(range(13)[::-1]) == list(xrange(12, -1, -1)) True