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.
Features
- Cypher query support for Psycopg2 PostgreSQL Python driver (enables cypher queries directly)
- Deserialize AgensGraph results (AGType) to Vertex, Edge, Path
Install for PYPI
pip install agensgraph-python
Build From Source
git clone https://github.com/skaiworldwide-oss/agensgraph-python
cd agensgraph-python
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 |