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-rw-r--r--lib/sqlalchemy/orm/clsregistry.py17
1 files changed, 7 insertions, 10 deletions
diff --git a/lib/sqlalchemy/orm/clsregistry.py b/lib/sqlalchemy/orm/clsregistry.py
index 0d45fb40d..bd02aea4f 100644
--- a/lib/sqlalchemy/orm/clsregistry.py
+++ b/lib/sqlalchemy/orm/clsregistry.py
@@ -372,16 +372,13 @@ class _class_resolver:
return self.fallback[key]
def _raise_for_name(self, name, err):
- util.raise_(
- exc.InvalidRequestError(
- "When initializing mapper %s, expression %r failed to "
- "locate a name (%r). If this is a class name, consider "
- "adding this relationship() to the %r class after "
- "both dependent classes have been defined."
- % (self.prop.parent, self.arg, name, self.cls)
- ),
- from_=err,
- )
+ raise exc.InvalidRequestError(
+ "When initializing mapper %s, expression %r failed to "
+ "locate a name (%r). If this is a class name, consider "
+ "adding this relationship() to the %r class after "
+ "both dependent classes have been defined."
+ % (self.prop.parent, self.arg, name, self.cls)
+ ) from err
def _resolve_name(self):
name = self.arg