Blacken the source code and sort imports (#507)

* Add black and isort to tox and reformat the code

* Reformat comments and violations

README.rst

@@ -15,6 +15,12 @@ pydocstyle - docstring style checker
 .. image:: https://pepy.tech/badge/pydocstyle
     :target: https://pepy.tech/project/pydocstyle
 
+.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
+    :target: https://github.com/psf/black
+
+.. image:: https://img.shields.io/badge/%20imports-isort-%231674b1?style=flat&labelColor=ef8336
+    :target: https://pycqa.github.io/isort/
+
 **pydocstyle** is a static analysis tool for checking compliance with Python
 docstring conventions.
 

pyproject.toml

@@ -0,0 +1,9 @@
+[tool.black]
+line-length = 79
+target-version = ['py36']
+skip-string-normalization = true
+
+[tool.isort]
+profile = "black"
+src_paths = ["src/pydocstyle"]
+line_length = 79

requirements/tests.txt

@@ -1,3 +1,5 @@
 pytest==3.0.2
 pytest-pep8==1.0.6
 mypy==0.782
+black==20.8b1
+isort==5.4.2

src/pydocstyle/__init__.py

@@ -1,7 +1,5 @@
-from .checker import check
-from .violations import Error, conventions
-from .utils import __version__
-
 # Temporary hotfix for flake8-docstrings
-from .checker import ConventionChecker
+from .checker import ConventionChecker, check
 from .parser import AllError
+from .utils import __version__
+from .violations import Error, conventions

src/pydocstyle/__main__.py

@@ -12,6 +12,7 @@
 
 def main() -> None:
     from pydocstyle import cli
+
     cli.main()