Added import of synonym in example code in Synonym portion of docs

diff --git a/doc/build/orm/mapped_attributes.rst b/doc/build/orm/mapped_attributes.rst
index a8711d2e6439b8129f055dd0675ca765fb42763d..91e43d2021cbd7c6a9dc17c7cea555cbe7d66bfb 100644 (file)
--- a/doc/build/orm/mapped_attributes.rst
+++ b/doc/build/orm/mapped_attributes.rst
@@ -256,6 +256,8 @@ to "mirror" another attribute that is mapped.
 In the most basic sense, the synonym is an easy way to make a certain
 attribute available by an additional name::
 
+    from sqlalchemy.orm import synonym
+    
     class MyClass(Base):
         __tablename__ = 'my_table'