python delete item from list

value of the element 7 list.remove (obj) Remove the first occurrence of a value in a list 8 list.reverse () Reverse list elements 9 list.sort ([func]) Sort the original list tuple ===========================================================A

Full-stack python development-Day4 list, python development-day4Full-stack python development-Day4 listI. First, expand the learning list based on the following points: #1: Basic use 1 Purpose 2 definition method 3 common operations + Built-in method #2: this type of Summary

left and right. It is also the str method. According to the consistent symmetric rule, there are some operation methods for the list. Append Element >>> A = ["good", "python", "I"] >>> a ['good', 'python', 'I'] >>>. append ("like") # Add the str type "like"> a ['good', 'python', 'I' to the

directly: Copy Code code as follows: >>> Lst[-1] False >>> Lst[-2] 5.44 >>> Lst[-3] ' Python ' >>> Lst[-4] ' Update Slow ' >>> Lst[-5] Traceback (most recent call last): File "LST[-5] Indexerror:list index out of range Because the list is a mutable ordered table, you can append elements to the end of the list:

(), with subscripts and slices for the For loop, join or copy, and use with the in and not in operators.13, what is the difference between a list and a tuple?A: Lists can be modified, and they can add values, delete values, and modify values. Tuples are not modifiable, they cannot be changed at all. Also, tuples use parentheses, and the list uses square brackets

This paper illustrates the data structure of Python and the linked list of algorithms. Share to everyone for your reference. The specific analysis is as follows: I. Overview A list (linked list) is a collection of data items, where each data item is part of a node and each

Creation and access of Python listsMovies = ["the Holy Grail","the Life ofBrian"," The meaningof life"]print(movies[1])List of commonly used BIFPrint () display list contentsLen () calculates the data item for the listAppend () Adds a data item at the end of the

Python-List Application-name management system and python-Management System Code: 1 #1 print function prompt 2 print ('=' * 50) 3 print ('name relational system v1.0') 4 print ('1: Add a new name ') 5 print ('2: delete a Name') 6 print ('3: change a Name') 7 print ('4: query a Name') 8 print ('5: exit System ') 9 print

peculiar-must have a comma, even if there is only one value:>>>43, (>>>4343)1.tuple function　　The function of the tuple function is basically the same as the list: Take a sequence as a parameter and convert it to a tuple>>>tuple ([i]) (a)　　2. Basic meta-group operations　　The operation of tuples is not complex, and there are not many other operations besides creation and access.　　DictionaryLists such data structures are appropriate for organizing valu

square brackets to intercept the characters as follows:#!/usr/bin/python#-*-coding:utf-8-*-List1= ['Physics','Chemistry',1997, -]list2= [1,2,3,4,5,6,7] Print"List1[0]:", list1[0]print"List2[1:5]:", list2[1:5]Execution resultslist1[0]: physicslist2[1:5]: [234 5]Update listYou can modify or update the list's data items, or you can use the Append () method to add the list items as follows:#!/usr/bin/-*-cod

Python contains six built-in sequences:List, tuples, strings, Unicode strings, buffer objects, xrange objects This article mainly discusses the two most common types: List and tuples. URL: http://www.cnblogs.com/archimedes/p/python-list-tuple.html. The main difference between a lis