Publish Python packages in Azure Pipelines

• 10/31/2018
• 2 minutes to read
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Azure Pipelines

You can publish Python packages produced by your build to:

• Azure Artifacts
• Other repositories such as https://pypi.org/

To publish Python packages produced by your build, you'll use twine, a widely used tool for publishing Python packages. This guide covers how to do the following in your pipeline:

1. Install twine on your build agent
2. Authenticate twine with your Azure Artifacts feeds
3. Use a custom task that invokes twine to publish your Python packages

Install twine

First, you'll need to run pip install twine to ensure the build agent has twine installed.

- script: 'pip install twine'

Authenticate Azure Artifacts with twine

To use twine to publish Python packages, you first need to set up authentication. The Python Twine Authenticate task stores your authentication credentials in an environment variable (PYPIRC_PATH). twine will reference this variable later.

- task: TwineAuthenticate@0
  inputs:
    artifactFeeds: 'feed_name1, feed_name2'
    externalFeeds: 'feed_name1, feed_name2'

Use a custom twine task to publish

After you've set up authentication with the preceding snippet, you can use twine to publish your Python packages. The following example uses a custom command-line task.

- script: 'twine upload -r {feedName/EndpointName} --config-file $(PYPIRC_PATH) {package path to publish}'

Tips and FAQs

• The authentication credentials written into the PYPIRC_PATH environment variable supersede those in your .ini and .conf files.

1. If you add multiple Python Twine Authenticate tasks at different times in your pipeline steps, each additional build task execution will extend (not override) the existing PYPIRC_PATH environment variable.

2. Lastly, we strongly recommend NOT checking into source control any credentials or tokens.