gh-93925: Improve clarity of sqlite3 commit/rollback, and close docs (#93926)

Co-authored-by: CAM Gerlach <CAM.Gerlach@Gerlach.CAM>

2 files changed, 22 insertions, 10 deletions

diff --git a/Modules/_sqlite/clinic/connection.c.h b/Modules/_sqlite/clinic/connection.c.h
index dd86fb5..62d31b7 100644
--- a/Modules/_sqlite/clinic/connection.c.h
+++ b/Modules/_sqlite/clinic/connection.c.h
@@ -248,7 +248,9 @@ PyDoc_STRVAR(pysqlite_connection_close__doc__,
 "close($self, /)\n"
 "--\n"
 "\n"
-"Closes the connection.");
+"Close the database connection.\n"
+"\n"
+"Any pending transaction is not committed implicitly.");
 
 #define PYSQLITE_CONNECTION_CLOSE_METHODDEF    \
     {"close", (PyCFunction)pysqlite_connection_close, METH_NOARGS, pysqlite_connection_close__doc__},
@@ -266,7 +268,9 @@ PyDoc_STRVAR(pysqlite_connection_commit__doc__,
 "commit($self, /)\n"
 "--\n"
 "\n"
-"Commit the current transaction.");
+"Commit any pending transaction to the database.\n"
+"\n"
+"If there is no open transaction, this method is a no-op.");
 
 #define PYSQLITE_CONNECTION_COMMIT_METHODDEF    \
     {"commit", (PyCFunction)pysqlite_connection_commit, METH_NOARGS, pysqlite_connection_commit__doc__},
@@ -284,7 +288,9 @@ PyDoc_STRVAR(pysqlite_connection_rollback__doc__,
 "rollback($self, /)\n"
 "--\n"
 "\n"
-"Roll back the current transaction.");
+"Roll back to the start of any pending transaction.\n"
+"\n"
+"If there is no open transaction, this method is a no-op.");
 
 #define PYSQLITE_CONNECTION_ROLLBACK_METHODDEF    \
     {"rollback", (PyCFunction)pysqlite_connection_rollback, METH_NOARGS, pysqlite_connection_rollback__doc__},
@@ -1231,4 +1237,4 @@ exit:
 #ifndef DESERIALIZE_METHODDEF
     #define DESERIALIZE_METHODDEF
 #endif /* !defined(DESERIALIZE_METHODDEF) */
-/*[clinic end generated code: output=fb8908674e9f25ff input=a9049054013a1b77]*/
+/*[clinic end generated code: output=8818c1c3ec9425aa input=a9049054013a1b77]*/
diff --git a/Modules/_sqlite/connection.c b/Modules/_sqlite/connection.c
index f0e6a56..b6b7417 100644
--- a/Modules/_sqlite/connection.c
+++ b/Modules/_sqlite/connection.c
@@ -470,12 +470,14 @@ error:
 /*[clinic input]
 _sqlite3.Connection.close as pysqlite_connection_close
 
-Closes the connection.
+Close the database connection.
+
+Any pending transaction is not committed implicitly.
 [clinic start generated code]*/
 
 static PyObject *
 pysqlite_connection_close_impl(pysqlite_Connection *self)
-/*[clinic end generated code: output=a546a0da212c9b97 input=3d58064bbffaa3d3]*/
+/*[clinic end generated code: output=a546a0da212c9b97 input=b3ed5b74f6fefc06]*/
 {
     if (!pysqlite_check_thread(self)) {
         return NULL;
@@ -522,12 +524,14 @@ int pysqlite_check_connection(pysqlite_Connection* con)
 /*[clinic input]
 _sqlite3.Connection.commit as pysqlite_connection_commit
 
-Commit the current transaction.
+Commit any pending transaction to the database.
+
+If there is no open transaction, this method is a no-op.
 [clinic start generated code]*/
 
 static PyObject *
 pysqlite_connection_commit_impl(pysqlite_Connection *self)
-/*[clinic end generated code: output=3da45579e89407f2 input=39c12c04dda276a8]*/
+/*[clinic end generated code: output=3da45579e89407f2 input=c8793c97c3446065]*/
 {
     if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
         return NULL;
@@ -557,12 +561,14 @@ pysqlite_connection_commit_impl(pysqlite_Connection *self)
 /*[clinic input]
 _sqlite3.Connection.rollback as pysqlite_connection_rollback
 
-Roll back the current transaction.
+Roll back to the start of any pending transaction.
+
+If there is no open transaction, this method is a no-op.
 [clinic start generated code]*/
 
 static PyObject *
 pysqlite_connection_rollback_impl(pysqlite_Connection *self)
-/*[clinic end generated code: output=b66fa0d43e7ef305 input=12d4e8d068942830]*/
+/*[clinic end generated code: output=b66fa0d43e7ef305 input=7f60a2f1076f16b3]*/
 {
     if (!pysqlite_check_thread(self) || !pysqlite_check_connection(self)) {
         return NULL;