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, 34 insertions, 30 deletions

diff --git a/lib/sqlalchemy/sql/schema.py b/lib/sqlalchemy/sql/schema.py
index d6c3f5000..804c8bdb8 100644
--- a/lib/sqlalchemy/sql/schema.py
+++ b/lib/sqlalchemy/sql/schema.py
@@ -30,25 +30,30 @@ as components in SQL expressions.
 """
 from __future__ import absolute_import
 
-from .. import exc, util, event, inspection
-from .base import SchemaEventTarget, DialectKWArgs
-import operator
-from . import visitors
-from . import type_api
-from .base import _bind_or_error, ColumnCollection
-from .elements import (
-    ClauseElement,
-    ColumnClause,
-    _as_truncated,
-    TextClause,
-    _literal_as_text,
-    ColumnElement,
-    quoted_name,
-)
-from .selectable import TableClause
 import collections
+import operator
+
 import sqlalchemy
 from . import ddl
+from . import type_api
+from . import visitors
+from .base import _bind_or_error
+from .base import ColumnCollection
+from .base import DialectKWArgs
+from .base import SchemaEventTarget
+from .elements import _as_truncated
+from .elements import _literal_as_text
+from .elements import ClauseElement
+from .elements import ColumnClause
+from .elements import ColumnElement
+from .elements import quoted_name
+from .elements import TextClause
+from .selectable import TableClause
+from .. import event
+from .. import exc
+from .. import inspection
+from .. import util
+
 
 RETAIN_SCHEMA = util.symbol("retain_schema")
 
@@ -373,11 +378,11 @@ class Table(DialectKWArgs, SchemaItem, TableClause):
         the table resides in a schema other than the default selected schema
         for the engine's database connection.  Defaults to ``None``.
 
-        If the owning :class:`.MetaData` of this :class:`.Table` specifies
-        its own :paramref:`.MetaData.schema` parameter, then that schema
-        name will be applied to this :class:`.Table` if the schema parameter
-        here is set to ``None``.  To set a blank schema name on a :class:`.Table`
-        that would otherwise use the schema set on the owning :class:`.MetaData`,
+        If the owning :class:`.MetaData` of this :class:`.Table` specifies its
+        own :paramref:`.MetaData.schema` parameter, then that schema name will
+        be applied to this :class:`.Table` if the schema parameter here is set
+        to ``None``.  To set a blank schema name on a :class:`.Table` that
+        would otherwise use the schema set on the owning :class:`.MetaData`,
         specify the special symbol :attr:`.BLANK_SCHEMA`.
 
         .. versionadded:: 1.0.14  Added the :attr:`.BLANK_SCHEMA` symbol to
@@ -386,10 +391,9 @@ class Table(DialectKWArgs, SchemaItem, TableClause):
 
         The quoting rules for the schema name are the same as those for the
         ``name`` parameter, in that quoting is applied for reserved words or
-        case-sensitive names; to enable unconditional quoting for the
-        schema name, specify the flag
-        ``quote_schema=True`` to the constructor, or use the
-        :class:`.quoted_name` construct to specify the name.
+        case-sensitive names; to enable unconditional quoting for the schema
+        name, specify the flag ``quote_schema=True`` to the constructor, or use
+        the :class:`.quoted_name` construct to specify the name.
 
     :param useexisting: Deprecated.  Use :paramref:`.Table.extend_existing`.
 
@@ -1070,9 +1074,9 @@ class Column(DialectKWArgs, SchemaItem, ColumnClause):
                 Column('id', ForeignKey('other.id'),
                             primary_key=True, autoincrement='ignore_fk')
 
-            It is typically not desirable to have "autoincrement" enabled
-            on a column that refers to another via foreign key, as such a column
-            is required to refer to a value that originates from elsewhere.
+            It is typically not desirable to have "autoincrement" enabled on a
+            column that refers to another via foreign key, as such a column is
+            required to refer to a value that originates from elsewhere.
 
           The setting has these two effects on columns that meet the
           above criteria:
@@ -4021,8 +4025,8 @@ class MetaData(SchemaItem):
             To resolve these cycles, either the
             :paramref:`.ForeignKeyConstraint.use_alter` parameter may be appled
             to those constraints, or use the
-            :func:`.schema.sort_tables_and_constraints` function which will break
-            out foreign key constraints involved in cycles separately.
+            :func:`.schema.sort_tables_and_constraints` function which will
+            break out foreign key constraints involved in cycles separately.
 
         .. seealso::