Add code format configurations

Makefile

@@ -0,0 +1,9 @@
+.PHONY: fmt
+fmt:
+	pipenv run isort -rc .
+	pipenv run black .
+
+.PHONY: chk
+chk:
+	pipenv run isort -c -rc .	
+	pipenv run black --check --diff .

Pipfile

@@ -3,6 +3,9 @@ url = "https://pypi.python.org/simple"
 verify_ssl = true
 name = "pypi"
 
+[pipenv]
+allow_prereleases = true
+
 [packages]
 e1839a8 = {path = ".",extras = ["sqlalchemy", "pandas"],editable = true}
 
@@ -14,4 +17,6 @@ wheel = "*"
 pytest = ">=3.5"
 pytest-cov = "*"
 pytest-flake8 = ">=1.0.1"
+pytest-black = "*"
+pytest-isort = "*"
 pytest-xdist = "*"

README.rst

@@ -10,9 +10,11 @@
 .. image:: https://img.shields.io/pypi/l/PyAthena.svg
     :target: https://github.com/laughingman7743/PyAthena/blob/master/LICENSE
 
-.. image:: https://img.shields.io/pypi/dm/PyAthena.svg
-    :target: https://pypistats.org/packages/pyathena
+.. image:: https://pepy.tech/badge/pyathena/month
+    :target: https://pepy.tech/project/pyathena/month
 
+.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
+    :target: https://github.com/psf/black
 
 PyAthena
 ========
@@ -828,3 +830,25 @@ Run test multiple Python versions
     $ pyenv local 3.8.2 3.7.2 3.6.8 3.5.7 2.7.16
     $ pipenv run tox
     $ pipenv run scripts/test_data/delete_test_data.sh
+
+Code formatting
+---------------
+
+The code formatting uses `black`_ and `isort`_.
+
+Appy format
+~~~~~~~~~~~
+
+.. code:: bash
+
+    $ make fmt
+
+Check format
+~~~~~~~~~~~~
+
+.. code:: bash
+
+    $ make chk
+
+.. _`black`: https://github.com/psf/black
+.. _`isort`: https://github.com/timothycrosley/isort

setup.cfg

@@ -3,3 +3,8 @@ universal = 1
 
 [tool:pytest]
 flake8-max-line-length = 100
+
+[isort]
+line_length = 100
+order_by_type = True
+multi_line_output = 4

tox.ini

@@ -9,8 +9,10 @@ deps =
     pytest>=3.5
     pytest-cov
     pytest-flake8>=1.0.1
+    pytest-black
+    pytest-isort
     pytest-xdist
 commands =
-    pytest --cov pyathena --cov-report html --cov-report term --flake8
+    pytest --cov pyathena --cov-report html --cov-report term --flake8 --black --isort
 passenv =
     AWS_*