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Selenium element operation 1. In the process of using Selenium, it is not enough to locate the element and operate the browser WebDriver object. More importantly, we need to operate an element (1) for example: input data into the input box, click the button, etc 2. After locating an element using the element location method, find_element_by_* ...

1, Introduction to xpath xpath is an XML path language, which can be used to determine the location of elements in XML documents and find elements through element paths. HTML is an implementation of XML, so xpath is a very powerful positioning method. 1. Formula: / / tag name [@ attribute = 'value of attribute'] //*[@ id="kw"] -- r ...

  introduction Some time ago, a young lady downloaded an encrypted compressed package resource, which is the latest movie in release, so she found me and asked me to help her crack it. The blogger thought it was not easy, so he went to the Internet to find a compressed package password cracking software, but when using it, he found that he c ...

json Purpose: Encodes Python objects into JSON strings and decodes JSON strings into Python objects. The JSON module provides an API to convert Python objects in memory into JSON sequences. JSON has the advantage of being implemented in multiple languages, especially JavaScript. It is widely used in the communication between Web server and c ...

1, Summary attribute Class attribute (field): variables directly defined in a class are class attributes, which are defined by 'class.' Mode of use Object attribute: take 'self Attribute name = value 'is defined in__ init__ Method Default values for object properties: Self: point to whoever calls it, so you can directly use self as an ...

1, Install Spark Introduction to Spark 2.4.0: installation and use of Spark Blog address: http://dblab.xmu.edu.cn/blog/1307-2/ 1.1 basic environment 1.1.1 before installing Spark: Linux system Java environment (Java8 or JDK1.8 or above) Hadoop environment Hadoop installation tutorial address: http://dblab.xmu.edu.cn/blog/install-hadoop/ Follow ...

Batch automatic matting of pictures to remove backgroundToday, I found a good thing called pickwant.com, which is an online website that automatically extracts pictures to remove the background. As long as you upload the picture, you can automatically remove the background and pull out the target object.Whether animals, cars or various products ...

The quick start series has reached Chapter 6, and we are finally going to touch the content of programming practice. The content in this tutorial assumes that you have a certain basic grasp of Python language development:   Understand Python data results Understand the concept of object-oriented programming Can use control statements t ...

unittest   Official reference address: https://docs.python.org/zh-cn/3/library/unittest.html?highlight=assertequal#module-unittest 1. Installation and import # unittest yes python Built in module for testing code,It can be imported directly without installation import unittest   2. Use matters needing attention: 　　1,The test file must b ...

Ideas of voting method voting is a combination strategy for classification problems in integrated learning. The basic idea is to choose the one with the most output among all machine learning algorithms. There are two types of machine learning algorithm output for classification: one is to directly output class labels, and the other is to out ...