from lib.topogen import LinearGraphTopo network = LinearGraphTopo(nodes=5)
from lib.topogen import GridGraphTopo network = GridGraphTopo(rows=3, cols=3)
from lib.topogen import RandomGraphTopo network = RandomGraphTopo(nodes=10, probability=0.3)This will create a random graph network with ten nodes and edges between them with 30% probability. The nodes are named 0 to 9. In conclusion, the topogen package library is used to create random graph topologies representing communication networks in Python. The Topogen routers are a set of classes and functions that allow building and configuring routers for these networks.