The "name" attribute is set on :class:`.Index` before the "attach"

events are called, so that attachment events can be used to dynamically
generate a name for the index based on the parent table and/or
columns. [ticket:2835]

1 files changed, 4 insertions, 3 deletions

diff --git a/lib/sqlalchemy/sql/schema.py b/lib/sqlalchemy/sql/schema.py
index 92220b0d1..c493b9132 100644
--- a/lib/sqlalchemy/sql/schema.py
+++ b/lib/sqlalchemy/sql/schema.py
@@ -2600,14 +2600,15 @@ class Index(ColumnCollectionMixin, SchemaItem):
                     columns.append(expr)
 
         self.expressions = expressions
+        self.name = quoted_name(name, kw.pop("quote", None))
+        self.unique = kw.pop('unique', False)
+        self.kwargs = kw
 
         # will call _set_parent() if table-bound column
         # objects are present
         ColumnCollectionMixin.__init__(self, *columns)
 
-        self.name = quoted_name(name, kw.pop("quote", None))
-        self.unique = kw.pop('unique', False)
-        self.kwargs = kw
+
 
     def _set_parent(self, table):
         ColumnCollectionMixin._set_parent(self, table)