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apply a consistent format to `setup.cfg` files
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README.md

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setup-cfg-fmt

apply a consistent format to setup.cfg files

installation

pip install setup-cfg-fmt

as a pre-commit hook

See pre-commit for instructions

Sample .pre-commit-config.yaml:

-   repo: https://github.com/asottile/setup-cfg-fmt
    rev: v1.5.0
    hooks:
    -   id: setup-cfg-fmt

cli

Consult the help for the latest usage:

$ setup-cfg-fmt --help
usage: setup-cfg-fmt [-h] [filenames [filenames ...]]

positional arguments:
  filenames

optional arguments:
  -h, --help  show this help message and exit

what does it do?

sets a consistent ordering for attributes

For example, name and version (the most important metadata) will always appear at the top.

 [metadata]
-version = 1.14.4
-name = pre_commit
+name = pre_commit
+version = 1.14.4

normalizes dashes to underscores in project name

  • pip will normalize names to dashes foo_bar => foo-bar
  • python setup.py sdist produces a filename with the name verbatim
  • pip wheel . produces a filename with an underscore-normalized name
$ # with dashed name
$ python setup.py sdist && pip wheel -w dist .
...
$ ls dist/ | cat
setup_cfg_fmt-0.0.0-py2.py3-none-any.whl
setup-cfg-fmt-0.0.0.tar.gz
$ # with underscore name
$ python setup.py sdist && pip wheel -w dist .
...
$ ls dist/ | cat
setup_cfg_fmt-0.0.0-py2.py3-none-any.whl
setup_cfg_fmt-0.0.0.tar.gz

This makes it easier to upload packages to pypi since they end up with the same filename prefix.

 [metadata]
-name = pre-commit
+name = pre_commit

adds long_description if README.md is present

This will show up on the pypi project page

 [metadata]
 name = pre_commit
 version = 1.14.5
+long_description = file: README.md
+long_description_content_type = text/markdown

adds license_file / license / license classifier if LICENSE exists

 [metadata]
 name = pre_commit
 version = 1.14.5
+license = MIT
+license_file = LICENSE
+classifiers =
+    License :: OSI Approved :: MIT License

set python_requires

A few sources are searched for guessing python_requires:

  • the existing python_requires setting itself
  • envlist in tox.ini if present
  • python version classifiers that are already set
  • the --min-py3-version argument (currently defaulting to 3.5)

If the minimum version is detected as python2, the --min-py3-version argument will be used to exclude python3.x versions (see below).

 [options]
 py_modules = pre_commit
+python_requires = >=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*

adds python version classifiers

classifiers are generated based on:

  • the python_requires setting
  • the --max-py-version argument (currently defaulting to 3.7)
 name = pkg
 version = 1.0
+classifiers =
+    Programming Language :: Python :: 2
+    Programming Language :: Python :: 2.7
+    Programming Language :: Python :: 3
+    Programming Language :: Python :: 3.4
+    Programming Language :: Python :: 3.5
+    Programming Language :: Python :: 3.6
+    Programming Language :: Python :: 3.7

sorts classifiers

 [metadata]
 name = pre_commit
 version = 1.14.5
 classifiers =
-    Programming Language :: Python :: 3
-    License :: OSI Approved :: MIT License
+    License :: OSI Approved :: MIT License
+    Programming Language :: Python :: 3
     Programming Language :: Python :: 3.6

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