解决报错 AttributeError: ‘NoneType‘ object has no attribute ‘to_capabilities‘_attributeerror: 'nonetype' object has no attribute

问题：

运行python脚本:

from appium import webdriver
 
desired_caps = {}
desired_caps['platformName'] = 'Android'
# 模拟器安卓的版本号
desired_caps['platformVersion'] = '9.0'
desired_caps['deviceName'] = '127.0.0.1:6555'
desired_caps['appPackage'] = 'com.android.settings'
desired_caps['appActivity'] = 'com.android.settings.Settings'
driver = webdriver.Remote('http://localhost:4723/wd/hub', desired_caps)

报错 AttributeError: ‘NoneType‘ object has no attribute ‘to_capabilities’ 如图：

解决方法：

卸载selenium和appium， pip uninstall selenium, appium-python-client,

降低指定appium版本进行安装：pip install appium-python-client==2.0

这时pip会将对应的selenium版本一起下载，所以就不用再装selenium了！

接着重新运行python脚本即可！