Sort imports with isort

Keep imports alphabetically sorted and their order homogeneous across
Python source files.

The isort project has more feature and is more active than the
flake8-import-order plugin.

Most issues caught were simply import ordering from the same module.
Where imports were purposefully placed out of order, tag with
isort:skip.

1 files changed, 2 insertions, 2 deletions

diff --git a/sphinx/setup_command.py b/sphinx/setup_command.py
index 29a9dace7..3422f3d4c 100644
--- a/sphinx/setup_command.py
+++ b/sphinx/setup_command.py
@@ -14,12 +14,12 @@
 import os
 import sys
 from distutils.cmd import Command
-from distutils.errors import DistutilsOptionError, DistutilsExecError
+from distutils.errors import DistutilsExecError, DistutilsOptionError
 from io import StringIO
 
 from sphinx.application import Sphinx
 from sphinx.cmd.build import handle_exception
-from sphinx.util.console import nocolor, color_terminal
+from sphinx.util.console import color_terminal, nocolor
 from sphinx.util.docutils import docutils_namespace, patch_docutils
 from sphinx.util.osutil import abspath