bpo-41662: Fix bugs in binding parameters in sqlite3 (GH-21998)
* When the parameters argument is a list, correctly handle the case
of changing it during iteration.
* When the parameters argument is a custom sequence, no longer
override an exception raised in ``__len__()``.
diff --git a/Lib/sqlite3/test/dbapi.py b/Lib/sqlite3/test/dbapi.py
index a8dfeb9..7867bf3 100644
--- a/Lib/sqlite3/test/dbapi.py
+++ b/Lib/sqlite3/test/dbapi.py
@@ -270,7 +270,7 @@
self.assertEqual(row[0], "foo")
def CheckExecuteParamSequence(self):
- class L(object):
+ class L:
def __len__(self):
return 1
def __getitem__(self, x):
@@ -282,6 +282,18 @@
row = self.cu.fetchone()
self.assertEqual(row[0], "foo")
+ def CheckExecuteParamSequenceBadLen(self):
+ # Issue41662: Error in __len__() was overridden with ProgrammingError.
+ class L:
+ def __len__(self):
+ 1/0
+ def __getitem__(slf, x):
+ raise AssertionError
+
+ self.cu.execute("insert into test(name) values ('foo')")
+ with self.assertRaises(ZeroDivisionError):
+ self.cu.execute("select name from test where name=?", L())
+
def CheckExecuteDictMapping(self):
self.cu.execute("insert into test(name) values ('foo')")
self.cu.execute("select name from test where name=:name", {"name": "foo"})