python用senium調用chrome時，需要使用chromedriver驅動，這個驅動需要對應chrome的版本。
而chrome又經常在后臺偷偷升級，如果沒關掉升級，之前的驅動又用不了。
其實用webdriver-manager聽說也可以，但是他要到國外下載驅動，沒辦法使用。
這點很愁人，所以我這邊開發了一個python自動下載并更新chromedriver驅動的程序。

• 獲取chrome的版本

def get_Chrome_version():
    key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, r'Software\Google\Chrome\BLBeacon')
    version, types = winreg.QueryValueEx(key, 'version')
    return version

• 獲取chromedriver的版本

def get_version(file_path):
    '''查詢系統內的Chromedriver版本'''
    outstd2 = os.popen(file_path+'chromedriver --version').read()
    return outstd2.split(' ')[1]

• 對比及下載

    if driver_main_version != chrome_main_version:
        print("chromedriver版本與chrome瀏覽器不兼容，更新中>>>")
        versionList = get_server_chrome_versions()
        if chromeVersion in versionList:
            download_url = f"{url}{chromeVersion}/chromedriver_win32.zip"
        else:
            for version in versionList:
                if version.startswith(str(chrome_main_version)):
                    download_url = f"{url}{version}/chromedriver_win32.zip"
                    break
            if download_url == "":
                print("暫無法找到與chrome兼容的chromedriver版本，請在http://npm.taobao.org/mirrors/chromedriver/ 核實。")

        download_driver(download_url=download_url)
        path = file_path
        unzip_driver(path)
        os.remove("chromedriver.zip")

完整程序如下：

import os
import requests
import winreg
import zipfile

url = 'http://npm.taobao.org/mirrors/chromedriver/'


# chromedriver download link
def get_Chrome_version():
    key = winreg.OpenKey(winreg.HKEY_CURRENT_USER, r'Software\Google\Chrome\BLBeacon')
    version, types = winreg.QueryValueEx(key, 'version')
    return version


def get_server_chrome_versions():
    '''return all versions list'''
    versionList = []
    url = "https://registry.npmmirror.com/-/binary/chromedriver/"
    rep = requests.get(url).json()
    for item in rep:
        versionList.append(item["name"])
    return versionList


def download_driver(download_url):
    '''下載文件'''
    file = requests.get(download_url)
    with open("chromedriver.zip", 'wb') as zip_file:  # 保存文件到腳本所在目錄
        zip_file.write(file.content)
        print('下載成功')


def get_version(file_path):
    '''查詢系統內的Chromedriver版本'''
    outstd2 = os.popen(file_path+'chromedriver --version').read()
    return outstd2.split(' ')[1]


def unzip_driver(path):
    '''解壓Chromedriver壓縮包到指定目錄'''
    f = zipfile.ZipFile("chromedriver.zip", 'r')
    for file in f.namelist():
        f.extract(file, path)


def check_update_chromedriver(file_path):
    chromeVersion = get_Chrome_version()
    chrome_main_version = int(chromeVersion.split(".")[0])  # chrome主版本號
    driver_main_version=''
    if os.path.exists(os.path.join(file_path,"chromedriver.exe")):
        driverVersion = get_version(file_path)
        driver_main_version = int(driverVersion.split(".")[0])  # chromedriver主版本號
    download_url = ""
    if driver_main_version != chrome_main_version:
        print("chromedriver版本與chrome瀏覽器不兼容，更新中>>>")
        versionList = get_server_chrome_versions()
        if chromeVersion in versionList:
            download_url = f"{url}{chromeVersion}/chromedriver_win32.zip"
        else:
            for version in versionList:
                if version.startswith(str(chrome_main_version)):
                    download_url = f"{url}{version}/chromedriver_win32.zip"
                    break
            if download_url == "":
                print("暫無法找到與chrome兼容的chromedriver版本，請在http://npm.taobao.org/mirrors/chromedriver/ 核實。")

        download_driver(download_url=download_url)
        path = file_path
        unzip_driver(path)
        os.remove("chromedriver.zip")
        print('更新后的Chromedriver版本為：', get_version(file_path))
    else:
        print("chromedriver版本與chrome瀏覽器相兼容，無需更新chromedriver版本！")
    return os.path.join(file_path,"chromedriver.exe")

if __name__ == "__main__":
    file_path="E:\\"
    print(check_update_chromedriver(file_path))

歡迎點贊及收藏，謝謝！