diff options
Diffstat (limited to 'examples/large_collection/large_collection.py')
| -rw-r--r-- | examples/large_collection/large_collection.py | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/examples/large_collection/large_collection.py b/examples/large_collection/large_collection.py index eb014c6cb..0f34c54dc 100644 --- a/examples/large_collection/large_collection.py +++ b/examples/large_collection/large_collection.py @@ -1,13 +1,13 @@ -from sqlalchemy import ( - MetaData, - Table, - Column, - Integer, - String, - ForeignKey, - create_engine, -) -from sqlalchemy.orm import mapper, relationship, sessionmaker +from sqlalchemy import Column +from sqlalchemy import create_engine +from sqlalchemy import ForeignKey +from sqlalchemy import Integer +from sqlalchemy import MetaData +from sqlalchemy import String +from sqlalchemy import Table +from sqlalchemy.orm import mapper +from sqlalchemy.orm import relationship +from sqlalchemy.orm import sessionmaker meta = MetaData() @@ -56,8 +56,8 @@ mapper( # Member objects "belong" to their parent, are deleted when # removed from the collection cascade="all, delete-orphan", - # "delete, delete-orphan" cascade does not load in objects on delete, - # allows ON DELETE CASCADE to handle it. + # "delete, delete-orphan" cascade does not load in objects on + # delete, allows ON DELETE CASCADE to handle it. # this only works with a database that supports ON DELETE CASCADE - # *not* sqlite or MySQL with MyISAM passive_deletes=True, @@ -108,7 +108,8 @@ if __name__ == "__main__": # disappear automatically without the need for additional SQL. sess.delete(org) print( - "-------------------------\nflush three - delete org, delete members in one statement\n" + "-------------------------\nflush three - delete org, " + "delete members in one statement\n" ) sess.commit() |