#范例1：
>>> print map(abs, [-5,7,-12] )
[5, 7, 12]
#范例2：
>>> print [abs(i) for i in [-5,7,-12]]
[5, 7, 12]
#范例3：
>>> def myfunction(value):
... return value*10+1
...
>>> print map(myfunction, [1,2,3,4] )
[11, 21, 31, 41]
>>>
#范例4：
>>> print map(max, [4,5,6], [1,2,9] )
[4, 5, 9]
#范例5：
>>> [ max(4,1), max(5,2), max(6,9) ]
[4, 5, 9]
#//python/237