Python's list records
1 #!/usr/bin/env python3 2 # -*- coding: utf-8 -*- 3 4 names = ["sony","xiaomi","huawei","apple","google"] 5 names2 = ["233","253","163"] 6 7 8 print(names) 9 10 print(names[0]) . 11 Print (names [-1]) # query the last one 12 is Print (names [-2:]) # query the last two 13 is 14 # appended to the last 15 names.append ( " TCL " ) 16 Print (names) . 17 18 # increase, which directly specifies the position needs to be increased . 19 names.insert (. 1, " alibaba " ) 20 is Print (names) 21 is 22 is # Review 23 is names [2] = " mi The " 24 Print (names) 25 26 # Delete 27 names.remove (names [2 ]) 28 Print (names) 29 names.remove ( " TCL " ) 30 Print (names) 31 is 32 # The name query position 33 is Print (names.index ( " Apple " ) ) 34 is Print (names [names.index ( " Apple " )]) 35 36 # names names2 combined and 37 [ names.extend (names2) 38 is Print (names2) 39 Print(names) 40 41 is # count the number 42 is Print (names.count ( " Apple " )) 43 is 44 is # List reverse order 45 Print (names) 46 is names.reverse () 47 Print (names) 48 49 # sort 50 names.sort () 51 is Print (names) 52 is 53 is # acquired even to the last content, 0 and -1 is not written, the number of bits 2 54 is Print (names [:: 2]) # equal print (names [0 : -1: 2]) 55 56 is # Clear list 57 names.clear() 58 print(names)