build graph from transactions

build_graph_from_transactions.py

from collections import defaultdict
from decimal import Decimal
import networkx as nx

edges = defaultdict(lambda :defaultdict(Decimal))
for tx in eth_transactions:
    edges[tx.from_address][tx.to_address] += tx.amount

G = nx.DiGraph()
G.add_weighted_edges_from([(f, t, edges[f][t]) for f 
                           in edges for t in edges[f] if edges[f][t] > Decimal(100)]) 
print(nx.info(G))

''' Output
Name: 
Type: DiGraph
Number of nodes: 349
Number of edges: 296
Average in degree:   0.8481
Average out degree:   0.8481
'''