Importing test library ‘Selenium2Library’ failed: ImportError: No module named ‘Selenium2Library’
安装seleniumlibrary时需要注意有两个包，robotframework-seleniumlibrary和robotframework-selenium2library。
1 | pip install robotframework robotframework-seleniumlibrary |
WebDriverException: Message: ‘geckodriver’ executable needs to be in PATH.
找不到geckodriver，使用brew install geckodriver命令安装。
SessionNotCreatedException: Message: Unable to find a matching set of capabilities
驱动firefox浏览器失败，可能原因是本地没有firefox浏览器，使用Chrome替代。
WebDriverException: Message: ‘chromedriver’ executable needs to be in PATH. Please see https://sites.google.com/a/chromium.org/chromedriver/home
Chrome浏览器驱动失败，使用brew cask install chromedriver安装驱动。