tpoisot

import networkx as nx
import numpy as np
import itertools

## We define each S* motif as a directed graph in networkx
motifs = {
    'S1': nx.DiGraph([(1,2),(2,3)]),
    'S2': nx.DiGraph([(1,2),(1,3),(2,3)]),
    'S3': nx.DiGraph([(1,2),(2,3),(3,1)]),
    'S4': nx.DiGraph([(1,2),(3,2)]),