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, 5 insertions, 5 deletions

diff --git a/sphinx/domains/python.py b/sphinx/domains/python.py
index f4bc58b69..79d7e4f46 100644
--- a/sphinx/domains/python.py
+++ b/sphinx/domains/python.py
@@ -15,23 +15,23 @@ import sys
 import typing
 import warnings
 from inspect import Parameter
-from typing import Any, Dict, Iterable, Iterator, List, NamedTuple, Tuple
-from typing import cast
+from typing import Any, Dict, Iterable, Iterator, List, NamedTuple, Tuple, cast
 
 from docutils import nodes
 from docutils.nodes import Element, Node
 from docutils.parsers.rst import directives
 
 from sphinx import addnodes
-from sphinx.addnodes import pending_xref, desc_signature
+from sphinx.addnodes import desc_signature, pending_xref
 from sphinx.application import Sphinx
 from sphinx.builders import Builder
 from sphinx.deprecation import RemovedInSphinx40Warning, RemovedInSphinx50Warning
 from sphinx.directives import ObjectDescription
-from sphinx.domains import Domain, ObjType, Index, IndexEntry
+from sphinx.domains import Domain, Index, IndexEntry, ObjType
 from sphinx.environment import BuildEnvironment
 from sphinx.locale import _, __
-from sphinx.pycode.ast import ast, parse as ast_parse
+from sphinx.pycode.ast import ast
+from sphinx.pycode.ast import parse as ast_parse
 from sphinx.roles import XRefRole
 from sphinx.util import logging
 from sphinx.util.docfields import Field, GroupedField, TypedField