Preface: operated by a program to be executed does not allow any error, sometimes not a problem during the tests, but the error will be placed on the server, and print an error message is not very clear. At this time, I wonder if the script execution error was only able to save a screenshot of the current, it can be very intuitive to see the pictures cause of the error. Providing WebDriver theme function get_screenshot_as_file () to intercept the current window.
The key method used in this chapter as follows:
get_screenshot_as_file(): Screenshot
from selenium import webdriver
driver = webdriver.Chrome()
driver.get('https://www.baidu.com/')
# 截图，图片后缀最好为.png，如果是其他的执行的时候会有警告，但不会报错
driver.get_screenshot_as_file("D:\\baidu_index.png")
driver.quit()
Selenium anthology Portal:
| title | Brief introduction |
|---|---|
| Python crawler - Selenium (1) easy to install and use | Details of installation and simple to use Selenium is dependent on the environment of Windows and Centos7 |
| Python crawler - Selenium (2) and positioning elements common methods WebDriver | Details of the positioning element 8 ways and cooperate click and enter, submit, using the method of obtaining information assertion |
| Python crawler - Selenium (3) common method of controlling the browser | Details of using a custom browser window or full-screen size, browser control back, forward, refresh your browser and other methods of |
| Python reptile - Selenium (4) configuration parameters startup items | Details of the configuration parameters Selenium startup items including no interface mode, the browser window size, the browser User-Agent (request header), etc. |
| Python reptile - Selenium (5) mouse events | Details of use of right-click, double click, drag, hover, etc. |
| Python reptile - Selenium (6) key events | Details of operation of the keyboard, includes almost all common keycaps and key combinations |
| Python crawler - Selenium (7) multi-window switch | Selenium is described in detail how to implement the freedom to switch between different windows |
| Python crawler - Selenium (8) frame / iframe nested form page | Details of how to switch from the current positioning of the body frame / iframe embedded in a page form |
| Python crawler - Selenium (9) alert box (pop) Processing | Details of how to locate and deal with many types of warning popups |
| Python crawler - Selenium (10) treated drop-down box | Details on how to locate and deal with flexible drop-down box |
| Python reptile - Selenium (11) file upload | Details of how elegant by send_keys () the specified file upload |
| Python reptile - Selenium (12) for login Cookies, Cookies automatically log in and add | Details of how to obtain and use Cookies Cookies for automatic logon |
| Python crawler - Selenium (13) element disposed wait | Details how elegant set of elements waiting time, to prevent the program from running too fast positioning element failure |
| Python crawler - Selenium (14) screen shot | Details on how to use the screen shot |
| Python reptile - Selenium (15) closes the browser | Close the window detailed describes two differences |
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