py-postgresql 1.3.1

Query PostgreSQL databases using Python and the PQv3 protocol.

About

py-postgresql is a Python 3 package providing modules for working with PostgreSQL. Primarily, a high-level driver for querying databases.

While py-postgresql is still usable for many purposes, asyncpg and PostgREST are likely more suitable for most applications:

• https://github.com/MagicStack/asyncpg
• https://postgrest.org

py-postgresql, currently, does not have direct support for high-level async interfaces provided by recent versions of Python. Future versions may change this.

• Project Future

Advisory

In v2.0, many, potentially breaking, changes are planned. If you have automated installations using PyPI, make sure that they specify a major version.

• Support for older versions of PostgreSQL and Python will be removed. This will allow the driver to defer version parsing fixing (https://github.com/python-postgres/fe/issues/109), and better prepare for future versions.
• The connection establishment strategy will be simplified to only performing one attempt. sslmode parameter should be considered deprecated. v1.4 will provide a new security parameter implying sslmode=require. See (https://github.com/python-postgres/fe/issues/122) and (https://github.com/python-postgres/fe/issues/75).
• StoredProcedure will be removed. See (https://github.com/python-postgres/fe/issues/80).

Installation

From PyPI using pip:

python3 -m pip install py-postgresql

From GitHub using a full clone:

git clone https://github.com/python-postgres/fe.git
cd fe
python3 ./setup.py install

Basic Usage

import postgresql
db = postgresql.open('pq://user:password@host:port/database')

get_table = db.prepare("SELECT * from information_schema.tables WHERE table_name = $1")
print(get_table("tables"))

# Streaming, in a transaction.
with db.xact():
	for x in get_table.rows("tables"):
		print(x)

REPL with connection bound to db builtin:

python3 -m postgresql.bin.pg_python -I 'pq://postgres@localhost:5423/postgres'

Documentation

• https://py-postgresql.readthedocs.io
• https://github.com/python-postgres/fe/issues?q=label%3Ahowto

Related

• https://postgresql.org
• https://python.org