Setup import style check

.isort.cfg

@@ -0,0 +1,10 @@
+[settings]
+known_first_party = julia
+default_section = THIRDPARTY
+
+# Black-compatible setting.  See: https://github.com/ambv/black
+multi_line_output = 3
+include_trailing_comma = True
+force_grid_wrap = 0
+use_parentheses = True
+line_length = 88

.pre-commit-config.yaml

@@ -1,4 +1,8 @@
 repos:
+-   repo: https://github.com/pre-commit/mirrors-isort
+    rev: v4.3.17
+    hooks:
+    -   id: isort
 -   repo: https://github.com/ambv/black
     rev: 19.3b0
     hooks:

ci/install_pycall.py

@@ -5,6 +5,6 @@
     0, os.path.join(os.path.dirname(os.path.realpath(__file__)), os.path.pardir, "src")
 )
 
-import julia
+import julia  # isort:skip
 
 julia.install(color=True)

src/julia/core.py

@@ -13,7 +13,6 @@
 # Imports
 # ----------------------------------------------------------------------------
 
-# Stdlib
 from __future__ import print_function, absolute_import
 
 from logging import getLogger  # see `.logger`
@@ -45,9 +44,7 @@ def samefile(f1, f2):
         b = os.path.realpath(os.path.normcase(f2))
         return a == b
 
-
-# this is python 3.3 specific
-from types import ModuleType
+from types import ModuleType  # this is python 3.3 specific
 
 from .find_libpython import find_libpython, linked_libpython
 from .options import JuliaOptions, options_docs, parse_jl_options

tox.ini

@@ -60,6 +60,8 @@ changedir = {toxinidir}/docs
 
 [testenv:style]
 deps =
+    isort == 4.3.17
     black == 19.3b0
 commands =
+    isort --recursive --check-only .
     black . {posargs:--check --diff}