Fix pre-ping regression in old PyMySQL versions.

Fixed regression introduced by the fix in ticket :ticket:`10492` when using
pool pre-ping with PyMySQL version older than 1.0.

Fixes: #10650
Change-Id: Ic0744c8b6f91cc39868e31c3bfddb8df20c7dfbb

diff --git a/doc/build/changelog/unreleased_14/10650.rst b/doc/build/changelog/unreleased_14/10650.rst
new file mode 100644 (file)
index 0000000..dce6b4c
--- /dev/null
+++ b/doc/build/changelog/unreleased_14/10650.rst
@@ -0,0 +1,7 @@
+.. change::
+    :tags: bug, mysql
+    :tickets: 10650
+    :versions: 2.0.24
+
+    Fixed regression introduced by the fix in ticket :ticket:`10492` when using
+    pool pre-ping with PyMySQL version older than 1.0.

diff --git a/lib/sqlalchemy/dialects/mysql/pymysql.py b/lib/sqlalchemy/dialects/mysql/pymysql.py
index 6567202a45e4643c419f1225848a7c4992286c6c..ddb99542f8d809633df74904684fc7cef3bfaa1c 100644 (file)
--- a/lib/sqlalchemy/dialects/mysql/pymysql.py
+++ b/lib/sqlalchemy/dialects/mysql/pymysql.py
@@ -86,7 +86,9 @@ class MySQLDialect_pymysql(MySQLDialect_mysqldb):
         """  # noqa: E501
 
         try:
-            Connection = __import__("pymysql.connections").Connection
+            Connection = __import__(
+                "pymysql.connections"
+            ).connections.Connection
         except (ImportError, AttributeError):
             return True
         else: