webdriver.py 文件源码

def __init__(self, executable_path=None, port=0,
                 desired_capabilities=DesiredCapabilities.OPERA):
        """
        Creates a new instance of the Opera driver.

        Starts the service and then creates new instance of Opera Driver.

        :Args:
         - executable_path - path to the executable. If the default is used
                             it assumes the executable is in the
                             Environment Variable SELENIUM_SERVER_JAR
         - port - port you would like the service to run, if left as 0,
                  a free port will be found.
         - desired_capabilities: Dictionary object with desired capabilities -
                                 may be used to provide various Opera switches.
        """
        if executable_path is None:
            try:
                executable_path = os.environ["SELENIUM_SERVER_JAR"]
            except:
                raise Exception("No executable path given, please add one \
                      to Environment Variable 'SELENIUM_SERVER_JAR'")
        self.service = Service(executable_path, port=port)
        self.service.start()

        RemoteWebDriver.__init__(self,
                                 command_executor=self.service.service_url,
                                 desired_capabilities=desired_capabilities)
        self._is_remote = False