python

Python is an interpreted, interactive, object-oriented, open-source programming language. It incorporates modules, exceptions, dynamic typing, very high level dynamic data types, and classes. Python combines remarkable power with very clear syntax. It has interfaces to many system calls and libraries, as well as to various window systems, and is extensible in C or C++. It is also usable as an extension language for applications that need a programmable interface. Finally, Python is portable: it runs on many Unix variants, on the Mac, and on Windows 2000 and later.

wikipedia.org/wiki/Python_(programming_language)⁠

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⁠How to use this image

⁠Create a`Dockerfile` in your Python app project

FROM python:3WORKDIR /usr/src/appCOPY requirements.txt ./RUN pip install --no-cache-dir -r requirements.txtCOPY . .CMD [ "python", "./your-daemon-or-script.py" ]

or (if you need to use Python 2):

FROM python:2WORKDIR /usr/src/appCOPY requirements.txt ./RUN pip install --no-cache-dir -r requirements.txtCOPY . .CMD [ "python", "./your-daemon-or-script.py" ]

You can then build and run the Docker image:

$ docker build -t my-python-app .$ docker run -it --rm --name my-running-app my-python-app

⁠Run a single Python script

For many simple, single file projects, you may find it inconvenient to write a completeDockerfile. In such cases, you can run a Python script by using the Python Docker image directly:

$ docker run -it --rm --name my-running-script -v "$PWD":/usr/src/myapp -w /usr/src/myapp python:3 python your-daemon-or-script.py

or (again, if you need to use Python 2):

$ docker run -it --rm --name my-running-script -v "$PWD":/usr/src/myapp -w /usr/src/myapp python:2 python your-daemon-or-script.py

⁠Multiple Python versions in the image

In the non-slim variants there will be an additional (distro-provided)python executable at/usr/bin/python (and/or/usr/bin/python3) while the desired image-provided/usr/local/bin/python is the default choice in the$PATH. This is an unfortunate side-effect of using thebuildpack-deps image in the non-slim variants (and many distribution-provided tools being written against and likely to break with a different Python installation, so we can't safely remove/overwrite it).

⁠Image Variants

Thepython images come in many flavors, each designed for a specific use case.

⁠`python:<version>`

This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of.

Some of these tags may have names like bookworm or trixie in them. These are the suite code names for releases ofDebian⁠ and indicate which release the image is based on. If your image needs to install any additional packages beyond what comes with the image, you'll likely want to specify one of these explicitly to minimize breakage when there are new releases of Debian.

This tag is based off ofbuildpack-deps⁠.buildpack-deps is designed for the average user of Docker who has many images on their system. It, by design, has a large number of extremely common Debian packages. This reduces the number of packages that images that derive from it need to install, thus reducing the overall size of all images on your system.

⁠`python:<version>-slim`

This image does not contain the common Debian packages contained in the default tag and only contains the minimal Debian packages needed to runpython. Unless you are working in an environment whereonly thepython image will be deployed and you have space constraints, we highly recommend using the default image of this repository.

When using this imagepip install will work if a suitable built distribution is available for the Python distribution package being installed.pip install may fail when installing a Python distribution package from a source distribution. This image does not contain the Debian packages required to compile extension modules written in other languages. Possible solutions if apip install fails include:

Use this image and install any required Debian packages before runningpip install.
Use the default image of this repository. The default image contains the most commonly required Debian packages. The majority of arbitrarypip installs should be successful without additional header/development Debian packages.

⁠`python:<version>-alpine`

This image is based on the popularAlpine Linux project⁠, available inthealpine official image⁠. Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general.

This variant is useful when final image size being as small as possible is your primary concern. The main caveat to note is that it does usemusl libc⁠ instead ofglibc and friends⁠, so software will often run into issues depending on the depth of their libc requirements/assumptions. Seethis Hacker News comment thread⁠ for more discussion of the issues that might arise and some pro/con comparisons of using Alpine-based images.

To minimize image size, it's uncommon for additional related tools (such asgit orbash) to be included in Alpine-based images. Using this image as a base, add the things you need in your own Dockerfile (see thealpine image description⁠ for examples of how to install packages if you are unfamiliar).

⁠`python:<version>-windowsservercore`

This image is based onWindows Server Core (mcr.microsoft.com/windows/servercore)⁠. As such, it only works in places which that image does, such as Windows 10 Professional/Enterprise (Anniversary Edition) or Windows Server 2016.

For information about how to get Docker running on Windows, please see the relevant "Quick Start" guide provided by Microsoft:

Windows Containers Quick Start⁠

⁠License

View license information forPython 2⁠ andPython 3⁠.

As with all Docker images, these likely also contain other software which may be under other licenses (such as Bash, etc from the base distribution, along with any direct or indirect dependencies of the primary software being contained).

Some additional license information which was able to be auto-detected might be found intherepo-info repository'spython/ directory⁠.

As for any pre-built image usage, it is the image user's responsibility to ensure that any use of this image complies with any relevant licenses for all software contained within.

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Last updated

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About Official Images

Docker Official Images are a curated set of Docker open source and drop-in solution repositories.

Why Official Images?

These images have clear documentation, promote best practices, and are designed for the most common use cases.

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python

python Docker official image overview

⁠Quick reference

⁠Supported tags and respectiveDockerfile links

⁠Simple Tags

⁠Shared Tags

⁠Quick reference (cont.)

⁠What is Python?