序列与迭代

>>> myTuple = (123,'xyz',45.67)
>>> i = iter(myTuple)
>>> i.next()
123
>>> i.next()
'xyz'
>>> i.next()
45.67
>>> i.next()

列表解析

>>> map(lambda x: x**2,range(6))
[0, 1, 4, 9, 16, 25]
>>> [x**2 for x in range(6)]
[0, 1, 4, 9, 16, 25]