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-rw-r--r--Modules/_sqlite/connection.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index 585453a282..18a6b427c2 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -1131,6 +1131,10 @@ static int pysqlite_connection_set_isolation_level(pysqlite_Connection* self, Py
PyObject* begin_statement;
char* begin_statement_str;
+ if (isolation_level == NULL) {
+ PyErr_SetString(PyExc_AttributeError, "cannot delete attribute");
+ return -1;
+ }
Py_XDECREF(self->isolation_level);
if (self->begin_statement) {