testcontainers 4.13.2


pip install testcontainers

  Latest version

Released: Oct 07, 2025


Meta
Author: Sergey Pirogov
Maintainer: Balint Bartha
Requires Python: >=3.9.2,<4.0

Classifiers

Intended Audience
  • Developers
  • Information Technology

License
  • OSI Approved :: Apache Software License

Operating System
  • MacOS
  • Microsoft :: Windows
  • POSIX
  • Unix

Programming Language
  • Python :: 3
  • Python :: 3.10
  • Python :: 3.11
  • Python :: 3.12
  • Python :: 3.13
  • Python :: 3.14
  • Python :: 3.9

Topic
  • Software Development :: Libraries :: Python Modules

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Codespace

Testcontainers Python

testcontainers-python facilitates the use of Docker containers for functional and integration testing.

For more information, see the docs.

Getting Started

>>> from testcontainers.postgres import PostgresContainer
>>> import sqlalchemy

>>> with PostgresContainer("postgres:16") as postgres:
...     engine = sqlalchemy.create_engine(postgres.get_connection_url())
...     with engine.begin() as connection:
...         result = connection.execute(sqlalchemy.text("select version()"))
...         version, = result.fetchone()
>>> version
'PostgreSQL 16...'

The snippet above will spin up a postgres database in a container. The get_connection_url() convenience method returns a sqlalchemy compatible url we use to connect to the database and retrieve the database version.

Contributing / Development / Release

See CONTRIBUTING.md for more details.

Configuration

You can set environment variables to configure the library behaviour:

Env Variable Example Description
TESTCONTAINERS_DOCKER_SOCKET_OVERRIDE /var/run/docker.sock Path to Docker's socket used by ryuk
TESTCONTAINERS_RYUK_PRIVILEGED false Run ryuk as a privileged container
TESTCONTAINERS_RYUK_DISABLED false Disable ryuk
RYUK_CONTAINER_IMAGE testcontainers/ryuk:0.8.1 Custom image for ryuk
RYUK_RECONNECTION_TIMEOUT 10s Reconnection timeout for Ryuk TCP socket before Ryuk reaps all dangling containers

Alternatively you can set the configuration during runtime:

from testcontainers.core import testcontainers_config

testcontainers_config.ryuk_docker_socket = "/home/user/docker.sock"

Wheel compatibility matrix

Platform Python 3
any

Files in release

Extras:
Dependencies:
docker
python-dotenv
typing-extensions
urllib3
wrapt