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Automates the heavy lifting of release and distribution management for pure Python packages.

Project description

shore

Build Status

Shore is an opinionated distribution and release management tool for pure Python packages and mono repositories and is most effectively used with Git repositories.

Goals of Shore

  • Automate as much as possible of the release and distribution of Python packages
  • Prevent common mistakes from the beginning or provide tools to make it easier to catch them
  • Provide tooling for to handle Python package mono repositories

Getting Started

Installation

Shore can be installed from PyPI.

$ pip install shore-release-tool
$ shore --version

Configuring a Python package

Shore reads all configuration for your package from its package.yaml file. The shore new command can help you to initialize such a file. Alternatively, check out the src/shore/model.py source code to find the fields available for the package.yaml file.

$ shore new mypackage . --license MIT

This command will also create a LICENSE.txt file as well as an initial structure for your Python module if the files don't exist (ie. src/mypackage/__init__.py). Note that if your module name differs from the package name, you can specify the --modulename <name> option.

Checking for misconfiguration

Shore implements some automated checks to test the integrity of the data in package.yaml with other files in the repository. Checks will be run on shore update automatically, but for build automation they can also be run separately. For CI checks, it's useful to turn on the --treat-warnings-as-errors option which will cause the command to return a non-zero status code if at least one warning is generated.

$ shore checks --treat-warnings-as-errors

Rendering setup files

Shore generates setup file from the data defined in package.yaml. We recommend that these generated files are commited to the version control system of choice to ensure that users of your project do not need to depend on shore to install your package.

$ shore update

Bumping the version number

To bump the version number of your package at the same time, simply add the --version X.Y.Z option add the specify --patch, --minor or --major flags. Note that this will also update the version number in any files that shore knows also contain the version number (eg. the entrypoin source file of your package that contains the __version__ variable).

$ shore bump minor --tag

Publishing your package

After the setup files have been generated, you can use the package manager to build and publish your package. Shore can do the same for you if you don't want to leave your comfort zone however. ;-)

Currently shore only supports the pypi publishing target, which by default publishes your package on https://pypi.org (or https://test.pypi.org if you add the --test flag).

$ shore publish pypi --test

Note: If you explicityl specify the use section in package.yaml, you need to ensure that the setuptools and pypi plugin is in that list.

Including package data

There are two methods in which additional files can be shipped alongside a Python package: "data files" and "package data". While files from the former will be copied into a folder relative to sys.prefix, files from the latter will be installed alongside the package and should be accessed with the pkg_resources module.

Using "data files" usually requires some more effort to make it work with an editable installation of your package during development (detecting that your package is currently installed in editable mode and looking for the files in a different location), thus using "package data" is usually the preferred method. However if your additional files contain binaries that need to be present on the file system, "data files" is the better bet.

"Data files" are configured with a special option called datafiles which consists of alist of strings that define which files are to be copied to what location inside sys.prefix as well as patterns for the files to copy. The syntax is <src>[:<dst>],<pattern>,<pattern>....

datafiles:
  - src/datafiles,file.txt
  - src/datafiles:data,!file.txt

Data files are always prefixed with data/<packagename>, thus to access the file at runtime you must add that to the path like this:

os.path.join(sys.prefix, 'data', 'mypackage', 'file.txt')

"Package files" on the other hand can be included by simply specifying them in the MANIFEST.in file.

manifest:
- include src/mypackage/data/file.txt
- recursive-include src/mypackage/data/models *.bin

Tip: You can use the shore build command to produce a distribution archive of your package, which you can inspect to ensure the (package) data files are included as expected.


Copyright © 2020, Niklas Rosenstein

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