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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_config(workflow):
 """ Obtain configuration object Does not fail :return: ReactorConfig instance """

    try:
        workspace = workflow.plugin_workspace[ReactorConfigPlugin.key]
        return workspace[WORKSPACE_CONF_KEY]
    except KeyError:
        # The plugin did not run or was not successful: use defaults
        conf = ReactorConfig()
        workspace = workflow.plugin_workspace.get(ReactorConfigPlugin.key, {})
        workspace[WORKSPACE_CONF_KEY] = conf
        workflow.plugin_workspace[ReactorConfigPlugin.key] = workspace
        return conf