The Node class lets you configure nodes that you wish to run much in the same way the roslaunch <node> tag does. You can then run these nodes using the launch() command, e.g.
l = [Node('test_ros', 'talker.py') for n in xrange(0, 10)] procs = [launch(x) for x in l]
You can also pass in package and node names directly to launch(), e.g.:
You can optionally pass in arguments:
launch('test_ros', 'add_two_ints_clients', [1, 2])
If the node name is not supplied, the package name is used, e.g.:
Launch files can be launched by accessing them through the packages interface. For example: