Properly handle missing attributes in query/eval strings

Author: alexmojaki

pandas/core/computation/expr.py

@@ -635,8 +635,9 @@ def visit_Attribute(self, node, **kwargs):
                 # something like datetime.datetime where scope is overridden
                 if isinstance(value, ast.Name) and value.id == attr:
                     return resolved
+                raise
 
-        raise ValueError(f"Invalid Attribute context {ctx.__name__}")
+        raise ValueError(f"Invalid Attribute context {ctx.__class__.__name__}")
 
     def visit_Call(self, node, side=None, **kwargs):