How to use the list in Python
This article mainly introduces how to use the list in Python. It is very detailed and has a certain reference value. Friends who are interested must finish it!
(1) create objects inside list / / list that can be strings, characters, numbers, and support mashup.
AList = ['apple', 100,0.01,' banana','A','B','C']
(2) access list / / directly through the subscript
> print (aList [0])
'apple'
(3) slicing of the list / / taking part of the list through slicing
> print (aList [4:6])
['Agar,' B']
(4) nesting of lists / / lists supports nesting, that is, lists can be nested in lists, even dictionaries, tuples, etc.
BList= [1001,200, ['aaa','bbb','ccc']]
> print (bList [2] [0])
Aaa
(5) list supports *, +
List1= [1,2,3]
List2= [100200300]
List3=list1+list2
Print (list3)
> [1,2,3,100,200,300]
List4= ['axiajiajiao', 'Bengyun' [']
List5=list4*3
Print (list5)
> ['await,' baked, 'cased,' await, 'baked,' clocked, 'baked,' c']
(6) calculate the length of the list / / use the built-in function len ()
AList= [1,2,3,4,5]
Print (len (aList))
> 5
(7) calculate the maximum and minimum values in the list
AList= [1,2,3,4,5]
Print (min (aList))
> > 1
Print (max (aList))
> 5
(8) the list is extended with the built-in extend function, which looks similar to +, but the difference is that + returns a new list, while extend modifies the list directly.
AList= [1,2,3]
B = [4, 5, 5, 6]
AList.extend (b)
Print (aList)
[1, 2, 3, 4, 5, 6]
(9) find the index / / built-in function index of an element in the list
AList= ['This','is','a','very','good','idea']
Print (alist.index ('very'))
> 3
(10) count the number of times a tuple is in the list, and the built-in function count
AList= ['to','do','or','not','to','do']
Print (aList.count ('to'))
> > 2
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