Seek help! Beautifulsop can't parse Baidu Homepage
Seek help! Beautifulsop can't parse Baidu Homepage
In the python 3 compiler, first import the corresponding third-party libraries. Here, I only use urllib.request and beautiful Soup for testing.
After the import, enter the following code in the shell to display the corresponding results.
>>>url_1 = r'https://www.baidu ...
Posted by myitanalyst on Fri, 27 Dec 2019 08:41:42 -0800
CSS drawing parallelogram
There are three methods:
(1) , parent element transform: skewX(-45deg); child element transform: skewX(45deg);
Rendering 1:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Com ...
Posted by Muncey on Tue, 24 Dec 2019 08:19:58 -0800
What techniques can be used to define classes in JavaScript, and what are their trade-offs?
I like to use OOP in large projects that I'm currently working on. I need to create several classes in JavaScript, but if I remember correctly, there are at least two ways to do this. What is grammar and why is it used in this way?
I want to avoid using third-party libraries - at least in the first place. In search of other answers, I foun ...
Posted by maGGot_H on Tue, 24 Dec 2019 03:54:44 -0800
Browser open new window blocked
1. window.open() method and submit method of form form form
The user needs to click the event to trigger, write it directly in the click event, and it is not blocked
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scal ...
Posted by ragedigital on Sun, 22 Dec 2019 11:29:39 -0800
css realizes vertical center layout
Vertical centering has always been a troublesome place, where you can share the methods you know
1. method 1
Set the display of the table to table code and the effect is as follows
//Part css
.table {
display: table;
vertical-align: middle;
position: absolute;
width: 100%;
...
Posted by mmj on Fri, 20 Dec 2019 13:22:28 -0800
Python Crawler Warfare: Bulk Download of Site Pictures
Preface
The text and pictures in this article are from the Internet. They are for study and communication only. They do not have any commercial use. The copyright is owned by the original author. If you have any questions, please contact us in time for processing.
Author: GitPython
PS: If you need Python learning materials for your child, click ...
Posted by Scip on Wed, 18 Dec 2019 23:43:39 -0800
[original] vma/malloc/mmap for Linux memory management
background
Read the fueling source code! - by Lu Xun
A picture is worth a thousand words. --By Golgi
Explain:
Kernel version: 4.14
ARM64 processor, Contex-A53, dual core
Using tool: Source Insight 3.5, Visio
1. overview
In this article, let's take a look at the address space of user state processes, mainly including the following:
vma;
...
Posted by KingPhilip on Fri, 13 Dec 2019 10:49:58 -0800
JavaScript monitors the change of input median in real time
Code
Method 1:
<!DOCTYPE html>
<html>
<head>
<script src="http://libs.baidu.com/jquery/1.10.2/jquery.min.js"></script>
<title>test</title>
</head>
<body>
<input class="et-name" type="input" name="name">
<script type="text/javascript">
$(funct ...
Posted by mickwaffle on Wed, 11 Dec 2019 09:13:52 -0800
How does the front end implement hash routing
Routing Development
Previous routes were implemented by the back end, reloading the page based on the url.However, in recent years, the complexity of front-end pages has led to increased server-side pressure.A natural solution is to change the URL to modify the page content without refreshing the page, which is the front-end routing described i ...
Posted by jedimaster_att on Tue, 10 Dec 2019 22:49:30 -0800
Realization of path path playback function based on Leaflet
Design sketch:
Explain:
1. This function is based on this blog: Path path playback with ArcGIS JS API But there are some small problems: first of all, the car does not move at a constant speed, but the running time of each section is fixed, so it has been modified on this blog; on the other hand, there is no way to set the ...
Posted by xsist10 on Mon, 09 Dec 2019 13:15:25 -0800