Python Package Management

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To keep Python packages in your development workspace in sync with
your deployed app, you have three options:

• Install the package in your terminal with
  shell $ pip install <package> $ pip freeze > requirements.txt

  This is our recommended solution as it will automatically include the
  version number of the package that you installed as well as any additional
  dependencies that were installed. You can use the Git UI in the
  leftmost sidebar to inspect which packages and versions were installed.

• Install the package in your terminal with $ pip install <package>
  and add that package name to requirements.txt. This will not version
  lock any of the package’s dependencies.

• Add the package to requirements.txt and then rebuild the
  workspace. As with the second option, this will not version lock any of the package’s
  dependencies.

Once you commit your changes to the requirements.txt file and git push those changes to deploy, your app rebuilds with the new requirements file.