Neo4j with python: meet problem when connecting to the local server

I took the first bite of Neo4j today using python, I meet the error

raise MaxRetryError(_pool, url, error or ResponseError(cause))

when I ran the code

from py2neo import Graph,Node,Relationship
##
test_graph=Graph(
    "http://localhost:7474",
    username="neo4j",
    password="neo4j"
)
  
##
test_node_1 = Node(label = "Person",name = "test_node_1")
test_graph.create(test_node_1) # error pops up here
  

things similar happen with neo4j (the official driver). I realized that it is the connection issue and here is the solution.

launch a cmd (windows) or a terminal and initialize the port before create the connection

Note that things work differently in python 2.x and python 3.x, for python 2.x, go

• 1, 2 and thanks to user3701979’s inspiration