Generating relations.py

import networkx as nx
import matplotlib as plt

# Generate the edge list using a list comprehension that invokes the actual relation you want. 
# For example, here is the relation of "divides", on the set {0,1,2,..., 20}. 
# We know a divides b if b mod a = 0. 

divides_edges = [(a,b) for a in range(21) for b in range(21) if b % a == 0] 
divides_graph = nx.DiGraph(divides_edges) 

# Here's one for "less than or equal to" on the set {0,..., 100}

less_than_equal = [(a,b) for a in range(101) for b in range(101) if a <= b]
lte_graph = nx.DiGraph(less_than_equal)