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, 14 insertions, 18 deletions

diff --git a/examples/custom_attributes/custom_management.py b/examples/custom_attributes/custom_management.py
index 812385906..6cddfe7bd 100644
--- a/examples/custom_attributes/custom_management.py
+++ b/examples/custom_attributes/custom_management.py
@@ -9,25 +9,21 @@ descriptors with a user-defined system.
 
 
 """
-from sqlalchemy import (
-    create_engine,
-    MetaData,
-    Table,
-    Column,
-    Integer,
-    Text,
-    ForeignKey,
-)
-from sqlalchemy.orm import mapper, relationship, Session
-
-from sqlalchemy.orm.attributes import (
-    set_attribute,
-    get_attribute,
-    del_attribute,
-)
-from sqlalchemy.orm.instrumentation import is_instrumented
-
+from sqlalchemy import Column
+from sqlalchemy import create_engine
+from sqlalchemy import ForeignKey
+from sqlalchemy import Integer
+from sqlalchemy import MetaData
+from sqlalchemy import Table
+from sqlalchemy import Text
 from sqlalchemy.ext.instrumentation import InstrumentationManager
+from sqlalchemy.orm import mapper
+from sqlalchemy.orm import relationship
+from sqlalchemy.orm import Session
+from sqlalchemy.orm.attributes import del_attribute
+from sqlalchemy.orm.attributes import get_attribute
+from sqlalchemy.orm.attributes import set_attribute
+from sqlalchemy.orm.instrumentation import is_instrumented
 
 
 class MyClassState(InstrumentationManager):