how to use python scripts or (.py files) in mininet? -

i new mininet , python. want execute python script in mininet, don't know how can run python scripts in mininet , store .py files in order call mininet.

any idea please?

here how it. copy , paste bellow code or download file: simple_pkt_topo.py.

__author__ = 'ehsan' mininet.node import cpulimitedhost mininet.topo import topo mininet.net import mininet mininet.log import setloglevel, info mininet.node import remotecontroller mininet.cli import cli """ instructions run topo:     1. go directory fil is.     2. run: sudo -e python simple_pkt_topo.py.py  topo has 4 switches , 4 hosts. connected in star shape. """   class simplepktswitch(topo):     """simple topology example."""      def __init__(self, **opts):         """create custom topo."""          # initialize topology         # uses constructor topo cloass         super(simplepktswitch, self).__init__(**opts)          # add hosts , switches         h1 = self.addhost('h1')         h2 = self.addhost('h2')         h3 = self.addhost('h3')         h4 = self.addhost('h4')          # adding switches         s1 = self.addswitch('s1', dpid="0000000000000001")         s2 = self.addswitch('s2', dpid="0000000000000002")         s3 = self.addswitch('s3', dpid="0000000000000003")         s4 = self.addswitch('s4', dpid="0000000000000004")          # add links         self.addlink(h1, s1)         self.addlink(h2, s2)         self.addlink(h3, s3)         self.addlink(h4, s4)          self.addlink(s1, s2)         self.addlink(s1, s3)         self.addlink(s1, s4)   def run():     c = remotecontroller('c', '0.0.0.0', 6633)     net = mininet(topo=simplepktswitch(), host=cpulimitedhost, controller=none)     net.addcontroller(c)     net.start()      cli(net)     net.stop()  # if script run directly (sudo custom/optical.py): if __name__ == '__main__':     setloglevel('info')     run() 

then can run topo using

sudo -e python <nameofthefile> 

now, use sudo -e python simple_pkt_topo.py start mininet.

here tutorial link.

note need controller. let me know if need instructions on that.

hope helps.