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, 30 insertions, 26 deletions

diff --git a/lib/sqlalchemy/sql/functions.py b/lib/sqlalchemy/sql/functions.py
index 883bb8cc3..e191cff15 100644
--- a/lib/sqlalchemy/sql/functions.py
+++ b/lib/sqlalchemy/sql/functions.py
@@ -8,30 +8,33 @@
 """SQL function API, factories, and built-in functions.
 
 """
-from . import sqltypes, schema
-from .base import Executable, ColumnCollection
-from .elements import (
-    ClauseList,
-    Cast,
-    Extract,
-    _literal_as_binds,
-    literal_column,
-    _type_from_args,
-    ColumnElement,
-    _clone,
-    Over,
-    BindParameter,
-    FunctionFilter,
-    Grouping,
-    WithinGroup,
-    BinaryExpression,
-)
-from .selectable import FromClause, Select, Alias
-from . import util as sqlutil
+from . import annotation
 from . import operators
+from . import schema
+from . import sqltypes
+from . import util as sqlutil
+from .base import ColumnCollection
+from .base import Executable
+from .elements import _clone
+from .elements import _literal_as_binds
+from .elements import _type_from_args
+from .elements import BinaryExpression
+from .elements import BindParameter
+from .elements import Cast
+from .elements import ClauseList
+from .elements import ColumnElement
+from .elements import Extract
+from .elements import FunctionFilter
+from .elements import Grouping
+from .elements import literal_column
+from .elements import Over
+from .elements import WithinGroup
+from .selectable import Alias
+from .selectable import FromClause
+from .selectable import Select
 from .visitors import VisitableType
 from .. import util
-from . import annotation
+
 
 _registry = util.defaultdict(dict)
 
@@ -718,19 +721,19 @@ class coalesce(ReturnTypeFromArgs):
     _has_args = True
 
 
-class max(ReturnTypeFromArgs):
+class max(ReturnTypeFromArgs):  # noqa
     pass
 
 
-class min(ReturnTypeFromArgs):
+class min(ReturnTypeFromArgs):  # noqa
     pass
 
 
-class sum(ReturnTypeFromArgs):
+class sum(ReturnTypeFromArgs):  # noqa
     pass
 
 
-class now(GenericFunction):
+class now(GenericFunction):  # noqa
     type = sqltypes.DateTime
 
 
@@ -813,7 +816,8 @@ class array_agg(GenericFunction):
     .. seealso::
 
         :func:`.postgresql.array_agg` - PostgreSQL-specific version that
-        returns :class:`.postgresql.ARRAY`, which has PG-specific operators added.
+        returns :class:`.postgresql.ARRAY`, which has PG-specific operators
+        added.
 
     """