How to pass multiple arguments to rospy node through command line?

edit

I'm looking for a notation like this

 rosrun my_package my_node.py arg1 arg2 arg3

That I can cun in the terminal, that will enable me to pass arguments to a ROS node which is implemented in python. So something like:

rosrun my_package read_topics.py arg1:='/topic1' arg2:='/topic2'

And be able to access those inside the python code like for example

subscriber = rospy.Subscriber(arg1, Bool, callback)
publisher = rospy.Publisher(arg2, Bool, queue_size=1)

How can I do that?

EDIT:

Based on the answers, the right approach is to pass arguments in a format

rosrun my_package my_node.py _one_topic:="/topic1" _another_topic:="/topic2" __name:="my_node_name"

and access the arguments inside the script as

publisher = rospy.Publisher(rospy.get_param('~one_topic'), Bool, queue_size=1)
subscriber = rospy.Subscriber(rospy.get_param('~another_topic'), Bool, callback)

The node name can be passed using a special parameter __name, because we need to know the node name prior to initializing the rospy node.

This works for me. Thank you both.