diff options
Diffstat (limited to 'lib/sqlalchemy/ext/declarative/clsregistry.py')
| -rw-r--r-- | lib/sqlalchemy/ext/declarative/clsregistry.py | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/lib/sqlalchemy/ext/declarative/clsregistry.py b/lib/sqlalchemy/ext/declarative/clsregistry.py index 7ff30b807..93e643cf5 100644 --- a/lib/sqlalchemy/ext/declarative/clsregistry.py +++ b/lib/sqlalchemy/ext/declarative/clsregistry.py @@ -298,12 +298,15 @@ class _class_resolver(object): else: return x except NameError as n: - 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, n.args[0], self.cls) + 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, n.args[0], self.cls) + ), + from_=n, ) |