chromeOptions 是一个配置 chrome 启动是属性的类。通过这个类，我们可以为 chrome 配置如下参数（这个部分可以通过 selenium 源码看到）：

• 设置 chrome 二进制文件位置 (binary_location)
• 添加启动参数 (add_argument)
• 添加扩展应用 (add_extension, add_encoded_extension)
• 添加实验性质的设置参数 (add_experimental_option)
• 设置调试器地址 (debugger_address)

配置参数

chrome_options.add_experimental_option("excludeSwitches", ['enable-automation'])

原理分析

class Options(object):
    KEY = "goog:chromeOptions"

    def __init__(self):
        self._binary_location = ''
        self._arguments = []
        self._extension_files = []
        self._extensions = []
        self._experimental_options = {}
        self._debugger_address = None
        self._caps = DesiredCapabilities.CHROME.copy()


    def add_experimental_option(self, name, value):
        """
        Adds an experimental option which is passed to chrome.

        Args:
          name: The experimental option name.
          value: The option value.
        """
        self._experimental_options[name] = value