diff options
| -rw-r--r-- | lib/sqlalchemy/orm/mapper.py | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/sqlalchemy/orm/mapper.py b/lib/sqlalchemy/orm/mapper.py index 8b92e8b4e..9ef2ff8f7 100644 --- a/lib/sqlalchemy/orm/mapper.py +++ b/lib/sqlalchemy/orm/mapper.py @@ -662,7 +662,7 @@ class Mapper(object): return if not self.non_primary and (self.class_key in mapper_registry): - raise exceptions.ArgumentError("Class '%s' already has a primary mapper defined with entity name '%s'. Use non_primary=True to create a non primary Mapper, or to create a new primary mapper, remove this mapper first via sqlalchemy.orm.clear_mapper(mapper), or preferably sqlalchemy.orm.clear_mappers() to clear all mappers." % (self.class_, self.entity_name)) + raise exceptions.ArgumentError("Class '%s' already has a primary mapper defined with entity name '%s'. Use non_primary=True to create a non primary Mapper. clear_mappers() will remove *all* current mappers from all classes." % (self.class_, self.entity_name)) def extra_init(class_, oldinit, instance, args, kwargs): self.compile() |