Programmer Think

1. Introduction According to Hongge's plan, this article continues to introduce WebDriver's element positioning method. This article introduces the penultimate method of positioning: By xpath. The location method of xpath is very powerful. Using this method, you can locate almost any element on the page. 2. What is xpath? XPath is the abbrev ...

1, Overview of overall functions In the process of daily learning, it is found that not all web pages can be captured by Scrapy. The reason is that JavaScript is dynamically rendered and Selenium is used to simulate browser crawling. There is no need to care about background requests or analyze the rendering process. As long as the content ...

In the previous series, we introduced the following 8 methods to locate elements. find_element_by_id: locate the element through the ID attribute value of the element;find_element_by_name: locate an element by its name attribute value;find_element_by_class_name: locate the element by its class attribute value;find_element_by_xpath: locate elem ...

Amazon's page of a classified product At the beginning, I must just try this page to see if I can request itAt the beginning, I didn't know whether the anti crawling was good or not, so I simply added a user agent. Sure enough, it didn't work. The web page I climbed to was the web page for me to enter the verification code.Then use session and ...

preface A small automatic clock in program is made in front, which can basically realize the tasks of checking in and checking out after work, but there are still some restrictions. For example, the program needs to run on the computer all the time (you can run the program after work, but the computer can't be turned off). This problem ...

How do crawlers deal with streaming loading pages? Please collect these 100 lines of code! In the previous article, the academic committee made an article Take photos of the website , if you find that the screen capture page is a streaming page, what if you cut off part of it? The so-called streaming loading page, the page height is consta ...

Python Selenium.WebDriverWait determines whether an element exists 1, Determine whether the element exists Selenium does not have a direct method to judge whether an element exists, so we can only write a special function or method through some existing methods. Here I summarize three methods for your reference, which can be selected ac ...

preface The simulated Login operation of station B is realized by selenium. No more nonsense. Let's start happily~ Effect demonstration development tool Python version: 3.6 four Related modules: selenium module; And some python built-in modules. Chromedriver: Download the driver matching the Google browser version on your computer in ...

In addition, we know that WebDriver has 8 methods to locate a single element. It is also mentioned that WebDriver also provides 8 corresponding positioning methods to locate a group of elements. 8 kinds of find_elements_by_* The method is as follows: find_elements_by_id: locate a group of elements through the ID attribute value of the elemen ...

1, Selenium (1) Introduction to Selenium Selenium is a Web automated testing tool. It was originally developed for website automated testing. Its type is like the key wizard we use to play games. It can operate automatically according to the specified commands. The difference is that selenium can run directly on the browser. It supports a ...