when I tried to have ROS exception handling, I came across with following syntax and I am unable to identify the significance of as e in the syntax of
rospy.ServiceException as e
is `e some kind of variable to store the error or something else?
What does "as e " mean in "rospy.ServiceException as e"
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In the context of rospy.ServiceException as e, as e is a way to give a short name (e in this case) to the exception object that will be raised if an error occurs.
Let's break it down:
rospy: This refers to the rospy module in ROS (Robot Operating System), which is a popular robotics middleware framework for building robotic systems.
ServiceException: This is an exception class within the rospy module that is raised when there's an issue related to a service call in ROS. For example, if a service request fails or if there's a problem with the service server, a rospy.ServiceException might be raised.
as e: This part is an aliasing statement. By writing as e, you're creating an alias or shorthand for the rospy.ServiceException instance that will be raised in case of an exception. Using e as the alias is a common convention, but you can choose any other valid variable name.