2.4 Quick Start: Using the Python Client as a Module
This section describes how to use the Python client as a module in Python applications.
Embedded Server
Note:
For this mode, the Python client and the Graph Server RPM package must be installed on the same machine.import os
os.environ["PGX_CLASSPATH"] = "/opt/oracle/graph/lib/*"
import pypgx
session = pypgx.get_session()
graph = session.create_graph_builder().add_edge(1, 2).add_edge(2, 3).build("my_graph")
analyst = session.create_analyst()
analyst.pagerank(graph)
rs = session.query_pgql("SELECT id(x), x.pagerank FROM MATCH (x) ON my_graph")
rs.print()
To execute, save the above program into a file named
program.py
and run the following
command.
python3 program.py
You will see the following output:
+-----------------------------+
| id(x) | pagerank |
+-----------------------------+
| 1 | 0.05000000000000001 |
| 2 | 0.09250000000000003 |
| 3 | 0.12862500000000002 |
+-----------------------------+
See Converting PGQL result set into pandas dataframe for more details on converting a PGQL result set into pandas dataframe.
Note:
To view the complete set of available Python APIs, see OPG4PY Python API Reference.Remote Server
Note:
Replace thebase_url
,
username, and password with values to match your environment
details.
import pypgx as pgx
import pypgx.pg.rdbms.graph_server as graph_server
base_url = "https://localhost:7007"
username = "scott"
password = "<password-for-scott>"
instance = graph_server.get_instance(base_url, username, password)
session = instance.create_session("python_pgx_client")
print(session)
To execute, save the above program into a file named
program.py
and run the following
command:
python3 program.py
After successful login, you'll see the following message indicating a PGX session was created:
PgxSession(id: 0bdd4828-c3cc-4cef-92c8-0fcd105416f0, name: python_pgx_client)
Note:
To view the complete set of available Python APIs, see OPG4PY Python API Reference.Parent topic: Quick Starts for Using Oracle Property Graph