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AgensGraph Python Driver

AgensGraph Python Driver allows Python programs to connect to an AgensGraph database. Since it is Psycopg2 type extension module for AgensGraph, it supports additional data types such as Vertex, Edge, and Path to represent graph data.

Install

$ pip install -U pip
$ pip install psycopg2

$ python /path/to/agensgraph/python/setup.py install

Example

import psycopg2
import agensgraph

conn = psycopg2.connect("dbname=test host=127.0.0.1 user=agens")
cur = conn.cursor()
cur.execute("DROP GRAPH IF EXISTS t CASCADE")
cur.execute("CREATE GRAPH t")
cur.execute("SET graph_path = t")

cur.execute("CREATE (:v {name: 'AgensGraph'})")
conn.commit();

cur.execute("MATCH (n) RETURN n")
v = cur.fetchone()[0]
print(v.props['name'])

Test

You may run the following command to test AgensGraph Python Driver.

$ python setup.py test

Before running the command, set the following environment variables to specify which database you will use for the test.

Variable Name Meaning
AGENSGRAPH_TESTDB database name to connect to
AGENSGRAPH_TESTDB_HOST database server host
AGENSGRAPH_TESTDB_PORT database server port
AGENSGRAPH_TESTDB_USER database user name
AGENSGRAPH_TESTDB_PASSWORD user password

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