[graph-tool] How can I generate an Erdos-Renyi network which follows Possion distribution with random_graph function?

Dear Tiago, I am trying to generate an Erdos-Renyi network like this: import graph_tool.all as gt import numpy.random as np g = gt.random_graph(1000, deg_sampler=np.poisson(4), directed=False) but it doesn't work out. Is anything I misunderstood in the documentation? I am new in this field. Thanks for your help! Best, Liu