Post black reformatting

Applied on top of a pure run of black -l 79 in
I7eda77fed3d8e73df84b3651fd6cfcfe858d4dc9,  this set of changes
resolves all remaining flake8 conditions for those codes
we have enabled in setup.cfg.

Included are resolutions for all remaining flake8 issues
including shadowed builtins, long lines, import order, unused
imports, duplicate imports, and docstring issues.

Change-Id: I4f72d3ba1380dd601610ff80b8fb06a2aff8b0fe

1 files changed, 25 insertions, 27 deletions

diff --git a/lib/sqlalchemy/sql/util.py b/lib/sqlalchemy/sql/util.py
index 4feaf9938..604b3cfd9 100644
--- a/lib/sqlalchemy/sql/util.py
+++ b/lib/sqlalchemy/sql/util.py
@@ -9,41 +9,39 @@
 
 """
 
-from .. import exc, util
-from .base import _from_objects, ColumnSet
-from . import operators, visitors
-from itertools import chain
 from collections import deque
+from itertools import chain
 
-from .elements import (
-    BindParameter,
-    ColumnClause,
-    ColumnElement,
-    Null,
-    UnaryExpression,
-    literal_column,
-    Label,
-    _label_reference,
-    _textual_label_reference,
-)
-from .selectable import (
-    SelectBase,
-    ScalarSelect,
-    Join,
-    FromClause,
-    FromGrouping,
-)
+from . import operators
+from . import visitors
+from .annotation import _deep_annotate  # noqa
+from .annotation import _deep_deannotate  # noqa
+from .annotation import _shallow_annotate  # noqa
+from .base import _from_objects
+from .base import ColumnSet
+from .ddl import sort_tables  # noqa
+from .elements import _find_columns  # noqa
+from .elements import _label_reference
+from .elements import _textual_label_reference
+from .elements import BindParameter
+from .elements import ColumnClause
+from .elements import ColumnElement
+from .elements import Null
+from .elements import UnaryExpression
 from .schema import Column
+from .selectable import FromClause
+from .selectable import FromGrouping
+from .selectable import Join
+from .selectable import ScalarSelect
+from .selectable import SelectBase
+from .. import exc
+from .. import util
+
 
 join_condition = util.langhelpers.public_factory(
     Join._join_condition, ".sql.util.join_condition"
 )
 
-# names that are still being imported from the outside
-from .annotation import _shallow_annotate, _deep_annotate, _deep_deannotate
-from .elements import _find_columns
-from .ddl import sort_tables
-
 
 def find_join_source(clauses, join_to):
     """Given a list of FROM clauses and a selectable,