py-opengauss 1.3.10

Opengauss driver and tools library.

This package is based on py-postgresql upgrades to work with openGauss.

Repo: https://gitee.com/opengauss/openGauss-connector-python-pyog Adapted from: http://github.com/python-postgres/fe v1.3.0

Warning

In v1.3, py_opengauss.driver.dbapi20.connect will now raise ClientCannotConnectError directly. Exception traps around connect should still function, but the __context__ attribute on the error instance will be None in the usual failure case as it is no longer incorrectly chained. Trapping ClientCannotConnectError ahead of Error should allow both cases to co-exist in the event that data is being extracted from the ClientCannotConnectError.

py-opengauss is a set of Python modules providing interfaces to various parts of openGauss. Primarily, it provides a pure-Python driver with some C optimizations for querying a openGauss database.

https://gitee.com/opengauss/openGauss-connector-python-pyog

Features:

• Prepared Statement driven interfaces.

• Cluster tools for creating and controlling a cluster.

• Support for most PostgreSQL types: composites, arrays, numeric, lots more.

• COPY support.

• Multiple ip connect support

Sample PG-API Code:

>>> import py_opengauss
>>> db = py_opengauss.open('pq://user:password@host:port,host:port/database')
>>> db.execute("CREATE TABLE emp (emp_first_name text, emp_last_name text, emp_salary numeric)")
>>> make_emp = db.prepare("INSERT INTO emp VALUES ($1, $2, $3)")
>>> make_emp("John", "Doe", "75,322")
>>> with db.xact():
...  make_emp("Jane", "Doe", "75,322")
...  make_emp("Edward", "Johnson", "82,744")
...

There is a DB-API 2.0 module as well:

py_opengauss.driver.dbapi20

However, PG-API is recommended as it provides greater utility.

Once installed, try out the pg_python console script:

$ python3 -m py_opengauss.bin.pg_python -h localhost -p port -U theuser -d database_name

If a successful connection is made to the remote host, it will provide a Python console with the database connection bound to the db name.