Add black config, pre-commit including black, check code with black.

8 files changed, 40 insertions, 26 deletions

diff --git a/.flake8 b/.flake8
index c85d34a..790c109 100644
--- a/.flake8
+++ b/.flake8
@@ -1,8 +1,9 @@
 [flake8]
+max-line-length = 88
 ignore =
-	# Allow tabs for indentation
-	W191
 	# W503 violates spec https://github.com/PyCQA/pycodestyle/issues/513
 	W503
 	# W504 has issues https://github.com/OCA/maintainer-quality-tools/issues/545
 	W504
+	# Black creates whitespace before colon
+	E203
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
new file mode 100644
index 0000000..922d942
--- /dev/null
+++ b/.pre-commit-config.yaml
@@ -0,0 +1,5 @@
+repos:
+- repo: https://github.com/ambv/black
+  rev: 18.9b0
+  hooks:
+  - id: black
diff --git a/README.rst b/README.rst
index 78750be..7050da3 100644
--- a/README.rst
+++ b/README.rst
@@ -6,6 +6,10 @@
 .. image:: https://img.shields.io/travis/jaraco/skeleton/master.svg
    :target: https://travis-ci.org/jaraco/skeleton
 
+.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
+   :target: https://github.com/ambv/black
+   :alt: Code style: Black
+
 .. .. image:: https://img.shields.io/appveyor/ci/jaraco/skeleton/master.svg
 ..    :target: https://ci.appveyor.com/project/jaraco/skeleton/branch/master
 
diff --git a/docs/conf.py b/docs/conf.py
index aeda56c..d9ea1a6 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -2,31 +2,31 @@
 # -*- coding: utf-8 -*-
 
 extensions = [
-	'sphinx.ext.autodoc',
-	'jaraco.packaging.sphinx',
-	'rst.linker',
+    'sphinx.ext.autodoc',
+    'jaraco.packaging.sphinx',
+    'rst.linker',
 ]
 
 master_doc = 'index'
 
 link_files = {
-	'../CHANGES.rst': dict(
-		using=dict(
-			GH='https://github.com',
-		),
-		replace=[
-			dict(
-				pattern=r'(Issue #|\B#)(?P<issue>\d+)',
-				url='{package_url}/issues/{issue}',
-			),
-			dict(
-				pattern=r'^(?m)((?P<scm_version>v?\d+(\.\d+){1,2}))\n[-=]+\n',
-				with_scm='{text}\n{rev[timestamp]:%d %b %Y}\n',
-			),
-			dict(
-				pattern=r'PEP[- ](?P<pep_number>\d+)',
-				url='https://www.python.org/dev/peps/pep-{pep_number:0>4}/',
-			),
-		],
-	),
+    '../CHANGES.rst': dict(
+        using=dict(
+            GH='https://github.com',
+        ),
+        replace=[
+            dict(
+                pattern=r'(Issue #|\B#)(?P<issue>\d+)',
+                url='{package_url}/issues/{issue}',
+            ),
+            dict(
+                pattern=r'^(?m)((?P<scm_version>v?\d+(\.\d+){1,2}))\n[-=]+\n',
+                with_scm='{text}\n{rev[timestamp]:%d %b %Y}\n',
+            ),
+            dict(
+                pattern=r'PEP[- ](?P<pep_number>\d+)',
+                url='https://www.python.org/dev/peps/pep-{pep_number:0>4}/',
+            ),
+        ],
+    ),
 }
diff --git a/pyproject.toml b/pyproject.toml
index 65d7426..a8b44c1 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,2 +1,5 @@
 [build-system]
 requires = ["setuptools>=34.4", "wheel", "setuptools_scm>=1.15"]
+
+[tool.black]
+skip-string-normalization = true
diff --git a/pytest.ini b/pytest.ini
index 61dab3d..15bb8b7 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -1,6 +1,6 @@
 [pytest]
 norecursedirs=dist build .tox .eggs
-addopts=--doctest-modules --flake8
+addopts=--doctest-modules --flake8 --black
 doctest_optionflags=ALLOW_UNICODE ELLIPSIS
 filterwarnings=
 	ignore:Possible nested set::pycodestyle:113
diff --git a/setup.cfg b/setup.cfg
index adaed86..78a0e46 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -33,6 +33,7 @@ testing =
 	pytest-sugar >= 0.9.1
 	collective.checkdocs
 	pytest-flake8
+	pytest-black
 
 	# local
 
diff --git a/setup.py b/setup.py
index c990c52..3435b2c 100644
--- a/setup.py
+++ b/setup.py
@@ -5,4 +5,4 @@
 import setuptools
 
 if __name__ == '__main__':
-	setuptools.setup(use_scm_version=True)
+    setuptools.setup(use_scm_version=True)