问如何使用Python中的RDFLIB库从熊猫数据中创建知识图

EN

import pandas as pd
from rdflib import Graph, URIRef, Namespace

d = {
    "source": pd.Series(["Edwin", "Reema", "Ron", "Tomorrow"]),
    "target": pd.Series(["football", "karate", "singer", "holiday"]),
    "edge": pd.Series(["plays", "plays", "is", "is"]),
}

df = pd.DataFrame(d)

g = Graph()
n = Namespace('http://example.org/foo/')

for inded, row in df.iterrows():
    # add triple to rdf-graph
    g.add((URIRef(n+row["source"]), URIRef(n+row["edge"]), URIRef(n+row["target"])))

print(g.serialize(format='turtle'))