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, 27 insertions, 27 deletions

diff --git a/lib/sqlalchemy/sql/default_comparator.py b/lib/sqlalchemy/sql/default_comparator.py
index fa0052198..69196341f 100644
--- a/lib/sqlalchemy/sql/default_comparator.py
+++ b/lib/sqlalchemy/sql/default_comparator.py
@@ -8,34 +8,34 @@
 """Default implementation of SQL comparison operations.
 """
 
-from .. import exc, util
-from . import type_api
 from . import operators
-from .elements import (
-    BindParameter,
-    True_,
-    False_,
-    BinaryExpression,
-    Null,
-    _const_expr,
-    _clause_element_as_expr,
-    ClauseList,
-    ColumnElement,
-    TextClause,
-    UnaryExpression,
-    collate,
-    _is_literal,
-    _literal_as_text,
-    ClauseElement,
-    and_,
-    or_,
-    Slice,
-    Visitable,
-    _literal_as_binds,
-    CollectionAggregate,
-    Tuple,
-)
-from .selectable import SelectBase, Alias, Selectable, ScalarSelect
+from . import type_api
+from .elements import _clause_element_as_expr
+from .elements import _const_expr
+from .elements import _is_literal
+from .elements import _literal_as_text
+from .elements import and_
+from .elements import BinaryExpression
+from .elements import BindParameter
+from .elements import ClauseElement
+from .elements import ClauseList
+from .elements import collate
+from .elements import CollectionAggregate
+from .elements import ColumnElement
+from .elements import False_
+from .elements import Null
+from .elements import or_
+from .elements import TextClause
+from .elements import True_
+from .elements import Tuple
+from .elements import UnaryExpression
+from .elements import Visitable
+from .selectable import Alias
+from .selectable import ScalarSelect
+from .selectable import Selectable
+from .selectable import SelectBase
+from .. import exc
+from .. import util
 
 
 def _boolean_compare(