List: list

Coding _ * _ #: _ * _. 8 UTF- 
# OF: Dian Yuan Wang 
# Date: 2019/12/7 
'' ' 
Data Type 
Integer 
String 
list, a tuple 
name =' wuchao ' 
name =' Jinxin ' 
name =' Xiaohu ' 
name = 'sanpang' 
name = 'Ligang' 
'' ' 

# list Create: to create a list by bracket 
A = [' wuchao ',' Jinxing ',' Xiaohu ',' sanpang ',' Ligang '] 
# CRUD 
# Find .count number query appears 
# .index: query element corresponding to subscript 
# in: there is a query whether the content list 

# Print (a [. 3]) 
# # search slice 
# print (a [1: 4 ]) # take the first index, to the end of the third index 
# print (a [:]) # take all list 
# print (a [1: -1 ]) # all take a value other than the last value 
# print (a [ 1: -1: 1]) in each number #a is meanings: the first one is represented by the subscript 1 starts, the second -1 for taking other than the last one, represents a third step (interval),A negative value indicates the positive value of the order of left \ right 
# Print (A [. 1: -1: 2]) # taken from left to right
Print # (A [:: -. 1]) 
# B = A [:: -. 1] 
# Print (A, B) 

# increasing insert: the data into an arbitrary position, it is necessary to tell which position append: additionally, the last position extend : the two lists hebing 
# # a.append ( 'Xuepeng') 
# a.insert (. 1, 'Xuepeng') 
# Print (A) 
# 
# # Review: query by extraction, and then assign 
# a [1] = ' haidilao '# single data fetch 
# a [1: 3] = [' dery ',' lining '] # plurality of data modification 
# Print (a) 

# remove 
# remove: remove entries in the list indicates, the input required to remove specific content 
# pop: delete the corresponding index values 
# del: deletion method other than the list 
# a.remove ( 'Jinxing') 
# del a [0] 
# Print (a) 

# calculations list, the number of occurrences of an element 
# = B [l, 2,3] 
# content list two superimposing method: Extend 
# a.extend (B) 
# print (a, B) 

#index method: the list of elements the subscript, to find the position based on the content 
# print (a .index ( 'jinxing'))

#reverse Method: The table of contents arranged in reverse sort: Sort 
a.reverse () 
Print (A) 
a.sort () 
a.reverse () 
Print (A)