python內建了一系列的常用函式，以便於我們使用，這裡會講到zip()函式和sum()函式
zip()函式
zip
(iter1,iter2,..
.)
如果各個可迭代物件的元素個數不一致，則返回的物件長度取決於最短的那個
from collections import iterator
list1 =[1
,2,3
,4,5
]list2 =
["good"
,"nice"
,"great"
,"clever"
]list3 =
["red"
,"yellow"
,"green"
]zipobj =
zip(list1,list2,list3)
print
(isinstance
(zipobj,iterator)
)print
(list
(zipobj)
)
true[(
1,'good'
,'red'),
(2,'nice'
,'yellow'),
(3,'great'
,'green'
)]
zip()函式既然能進行打包，那也能解包，如下：
zip
(*zipobj)
from collections import iterator
list1 =[1
,2,3
,4,5
]list2 =
["good"
,"nice"
,"great"
,"clever"
]list3 =
["red"
,"yellow"
,"green"
]zipobj =
zip(list1,list2,list3)
obj =
zip(
*zipobj)
print
(isinstance
(obj,iterator)
)print
(list
(obj)
)
true[(
1,2,
3),(
'good'
,'nice'
,'great'),
('red'
,'yellow'
,'green'
)]
dict1 =
print
(dict
(zip
(dict1.values(
),dict1.keys())
))
sum
(iter
)iter：可迭代物件，元素必須是number型別
list1 =[1
,2,3
,41,23
,1,2
,13,4
,4,12
,123
]print
(sum
(list1)
)#229
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