tweak this for now, would need a test

2 files changed, 3 insertions, 14 deletions

diff --git a/lib/sqlalchemy/schema.py b/lib/sqlalchemy/schema.py
index d2df3de1d..fa13d7065 100644
--- a/lib/sqlalchemy/schema.py
+++ b/lib/sqlalchemy/schema.py
@@ -1560,10 +1560,10 @@ class ForeignKey(SchemaItem):
     def _remove_from_metadata(self, metadata):
         parenttable, table_key, colname = self._resolve_col_tokens()
         fk_key = (table_key, colname)
-        try:
+
+        if self in metadata._fk_memos[fk_key]:
+            # TODO: no test coverage for self not in memos
             metadata._fk_memos[fk_key].remove(self)
-        except:
-            pass
 
     def _set_table(self, column, table):
         # standalone ForeignKey - create ForeignKeyConstraint
diff --git a/test/sql/test_metadata.py b/test/sql/test_metadata.py
index 7b6c8497e..851e9b920 100644
--- a/test/sql/test_metadata.py
+++ b/test/sql/test_metadata.py
@@ -1478,17 +1478,6 @@ class ConstraintTest(fixtures.TestBase):
         # remove twice OK
         metadata.remove(t2)
 
-    def test_remove_failed(self):
-        metadata = MetaData()
-        fk = ForeignKey('t1.x')
-        t3 = Table('t3', metadata, Column('y', Integer, ForeignKey('t1.x')))
-
-        try:
-            Table('t2', metadata, Column('y', Integer, fk))
-        except:
-            raise
-
-
 
 class ColumnDefinitionTest(AssertsCompiledSQL, fixtures.TestBase):
     """Test Column() construction."""