Automatically update selenium driver chromedriver

Due to frequent automatic updates of Google viewer selenium The driver fails and needs to be downloaded again , How to make code update automatically selenium What about the driving method ？

selenium When the connection Google viewer throws an exception , Will display the current version of Google Explorer , We can go to selenium Drive the download website to get all version information , Then find a matching version to download and unzip .

For faster download speed , Here I choose the domestic mirror station ：http://npm.taobao.org/mirrors/chromedriver/

It will redirect to ：https://registry.npmmirror.com/binary.html?path=chromedriver/

Checked by developer tools , You can find the interface to get all the latest version information ：https://registry.npmmirror.com/-/binary/chromedriver/

I match according to the first three numbers , Download the driver with the largest version number .

The final complete code is ：

from selenium import webdriver
from selenium.common.exceptions import SessionNotCreatedException
import re
import os
import requests
import zipfile
import itertools


def getChromeDriver(options=None):
    """ Code author ： Xiaoming - Code entities  xxmdmst.blog.csdn.net"""
    try:
        driver = webdriver.Chrome(options=options)
        return driver
    except SessionNotCreatedException as e:
        driver_version = re.search(
            "Chrome version ([\d.]+)", str(e)).group(1)
        chrome_version = re.search(
            "Current browser version is ([\d.]+) with", str(e)).group(1)
        print(f" Driver version ：{
      driver_version}, Google Explorer version ：{
      chrome_version}, Are not compatible \n Start updating the driver ...")
        res = requests.get(
            "https://registry.npmmirror.com/-/binary/chromedriver/")
        versions = [obj["name"][:-1] for obj in res.json() if re.match("\d+",
                                                                       obj["name"]) and obj["name"].count(".") == 3]
        versions = {
    key: max(versions_split, key=lambda x: int(x[x.rfind(".")+1:]))
                    for key, versions_split in itertools.groupby(versions, key=lambda x: x[:x.rfind(".")])}
        dest_version = versions[chrome_version[:chrome_version.rfind(".")]]
        print(" The driver will be updated to ", dest_version)
        file = f"chromedriver_{
      dest_version}_win32.zip"
        if not os.path.exists(file):
            url = f"https://registry.npmmirror.com/-/binary/chromedriver/{
      dest_version}/chromedriver_win32.zip"
            print(" Driver download address ：", url)
            res = requests.get(url)
            with open(file, 'wb') as f:
                f.write(res.content)
        else:
            print(file, " The file has been downloaded to the current directory , Next, directly use cache decompression to overwrite ...")
        with zipfile.ZipFile(file) as zf:
            zf.extract("chromedriver.exe", ".")
        driver = webdriver.Chrome(options=options)
        return driver


options = webdriver.ChromeOptions()
options.add_experimental_option(
    'excludeSwitches', ['enable-logging', 'enable-automation'])
driver = getChromeDriver(options)
driver.get("https://www.baidu.com/")

Printing example when the driver is incompatible ：

 Driver version ：100, Google Explorer version ：102.0.5005.115, Are not compatible 
 Start updating the driver ...
 The driver will be updated to  102.0.5005.61
 Driver download address ： https://registry.npmmirror.com/-/binary/chromedriver/102.0.5005.61/chromedriver_win32.zip

The download method developed above is relatively fast , If the code is too long , have access to webdriver_manager This library , adopt pip It can be installed directly ：

pip install webdriver_manager

Then execute the following code from https://chromedriver.storage.googleapis.com Automatically download the matching driver , And return to the download location ：

from webdriver_manager.chrome import ChromeDriverManager

ChromeDriverManager().install()

Print examples ：

[WDM] - ====== WebDriver manager ======
[WDM] - Current google-chrome version is 102.0.5005
[WDM] - Get LATEST chromedriver version for 102.0.5005 google-chrome
[WDM] - There is no [win32] chromedriver for browser 102.0.5005 in cache
[WDM] - About to download new driver from https://chromedriver.storage.googleapis.com/102.0.5005.61/chromedriver_win32.zip
[WDM] - Driver has been saved in cache [C:\Users\ASUS\.wdm\drivers\chromedriver\win32\102.0.5005.61]
'C:\\Users\\ASUS\\.wdm\\drivers\\chromedriver\\win32\\102.0.5005.61\\chromedriver.exe'

In this way, we can directly set the position of the driver through the returned string ：

from webdriver_manager.chrome import ChromeDriverManager

driver = webdriver.Chrome(ChromeDriverManager().install(), options=None)