在 Py4neo 中创建现有节点之间的关系

Question

I have a list of gene names genes_list and a list of genes that target other genes (list of tuples) genes2 , I successfully connected to my local database and created the 20244 nodes labeled GEN with name property. I am trying to generate a script that automates the creation of relationships for any pair of nodes(usin variables tupla[0]and tupla[1] ) in a Neo4j graph but I can't get the for loop to work for a list of tuples, any advice? Im still learning how to use this library any advices would be great! regards!

from py2neo import Node,Relationship,Graph, database,NodeMatcher  
import time
import pandas as pd

genes_list=pd.read_csv("Gen_list.txt",delimiter="\t",header=None)
genes_list=genes_list[0].tolist()
for name in genes_list:
    graph.run("CREATE(:GEN{name:$name})",name=name)

genes=pd.read_csv(r"C:\Users\espin\OneDrive\Escritorio\MCI\SCRIPTS\dorothea_final.csv", delimiter="\t",header=None)
genes2=list(genes.to_records(index=False))

for tupla in genes2:
    existing_u1 = matcher.match("GEN").where(name=tupla[0]).first()
    existing_u2 = matcher.match("GEN").where(name=tupla[1).first()
    graph.merge(existing_u1,"REGULATES", existing_u2)

Answer 1

I figured out, For the people that want to try this implementation and is using py2neo V4, try using graph.run()

for tupla in genes2:
    graph.run("MATCH(a:GEN{name:$name}) MATCH(b:GEN{name:$name1}) CREATE (a)-[:REGULATES]->(b)",name=tupla[0],name1=tupla[1])

remember that the query has to be in the first argument and then you declare the $ variables separated by "," at less this works when you have already created the nodes and does not duplicate the existing ones.