Passing arguments to Python callback in rospy

To pass more arguments to your callback function in rospy, it is actually super simple.

def callback(data, args):
    arg1 = args[0]
    arg2 = args[1]

sub = rospy.Subscriber("topic_name", String, callback, (arg1, arg2))

def callback(data, args):

arg1 = args[0]

arg2 = args[1]

sub = rospy.Subscriber("topic_name", String, callback, (arg1, arg2))

Of course, rather than a tuple, something like a single “String” could also be passed directly.

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