pg0 - PostgreSQL for Python

Zero-config PostgreSQL with pgvector. No installation, no Docker, no configuration.

Install

pip install pg0-embedded

Usage

from pg0 import Pg0

# Basic usage
with Pg0() as pg:
    print(pg.uri)  # postgresql://postgres:postgres@127.0.0.1:5432/postgres
    pg.execute("CREATE EXTENSION IF NOT EXISTS vector")
    pg.execute("SELECT version()")

# Custom configuration
pg = Pg0(
    name="myapp",
    port=5433,
    username="myuser",
    password="mypass",
    database="mydb",
    config={"shared_buffers": "512MB"}
)
pg.start()
pg.stop()

API

Pg0 Class

Method	Description
`start()`	Start PostgreSQL, returns `InstanceInfo`
`stop()`	Stop PostgreSQL
`drop()`	Stop and delete all data
`info()`	Get instance info
`execute(sql)`	Run SQL query
`uri`	Connection URI (property)
`running`	Check if running (property)

Module Functions

import pg0

pg0.start(name="default", port=5432, ...)  # Start instance
pg0.stop(name="default")                    # Stop instance
pg0.drop(name="default")                    # Delete instance
pg0.info(name="default")                    # Get instance info
pg0.list_instances()                        # List all instances

Getting Connection URI

from pg0 import Pg0

pg = Pg0()
pg.start()

# Using the uri property
print(pg.uri)  # postgresql://postgres:postgres@127.0.0.1:5432/postgres

# Or using info()
info = pg.info()
print(info.uri)  # postgresql://postgres:postgres@127.0.0.1:5432/postgres
print(info.port)  # 5432
print(info.username)  # postgres
print(info.database)  # postgres

Supported Platforms

Pre-built wheels are available for:

Platform	Architecture	Wheel Tag
macOS	Apple Silicon (M1/M2/M3)	`macosx_14_0_arm64`
Linux	x86_64 (glibc)	`manylinux_2_35_x86_64`
Linux	ARM64 (glibc)	`manylinux_2_35_aarch64`
Windows	x64	`win_amd64`

For other platforms, install from source (requires Rust toolchain):

pip install pg0-embedded --no-binary pg0-embedded

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Release history Release notifications | RSS feed

0.15.1

Jul 31, 2026

This release

0.15.0

Jul 29, 2026

0.14.2

May 28, 2026

0.14.1

May 8, 2026

0.14.0

May 5, 2026

0.13.0

Apr 24, 2026

0.12.3

Apr 8, 2026

0.12.2

Mar 26, 2026

0.12.0

Jan 31, 2026

0.11.1

Dec 19, 2025

0.11.0

Dec 16, 2025

0.10.1

Dec 12, 2025

0.3.0

Dec 12, 2025

0.2.0

Dec 10, 2025

0.1.1

Dec 2, 2025

pg0-embedded 0.15.0

pg0 - PostgreSQL for Python

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Pg0 Class

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