lol

venv/Lib/site-packages/sqlalchemy/dialects/postgresql/asyncpg.py

@@ -205,6 +205,7 @@ from .base import PGExecutionContext
 from .base import PGIdentifierPreparer
 from .base import REGCLASS
 from .base import REGCONFIG
+from .types import BIT
 from .types import BYTEA
 from .types import CITEXT
 from ... import exc
@@ -237,6 +238,10 @@ class AsyncpgTime(sqltypes.Time):
     render_bind_cast = True
 
 
+class AsyncpgBit(BIT):
+    render_bind_cast = True
+
+
 class AsyncpgByteA(BYTEA):
     render_bind_cast = True
 
@@ -566,6 +571,7 @@ class AsyncAdapt_asyncpg_cursor:
     async def _executemany(self, operation, seq_of_parameters):
         adapt_connection = self._adapt_connection
 
+        self.description = None
         async with adapt_connection._execute_mutex:
             await adapt_connection._check_type_cache_invalidation(
                 self._invalidate_schema_cache_asof
@@ -818,10 +824,23 @@ class AsyncAdapt_asyncpg_connection(AdaptedConnection):
 
     def ping(self):
         try:
-            _ = self.await_(self._connection.fetchrow(";"))
+            _ = self.await_(self._async_ping())
         except Exception as error:
             self._handle_exception(error)
 
+    async def _async_ping(self):
+        if self._transaction is None and self.isolation_level != "autocommit":
+            # create a tranasction explicitly to support pgbouncer
+            # transaction mode.   See #10226
+            tr = self._connection.transaction()
+            await tr.start()
+            try:
+                await self._connection.fetchrow(";")
+            finally:
+                await tr.rollback()
+        else:
+            await self._connection.fetchrow(";")
+
     def set_isolation_level(self, level):
         if self._started:
             self.rollback()
@@ -1002,6 +1021,7 @@ class PGDialect_asyncpg(PGDialect):
         {
             sqltypes.String: AsyncpgString,
             sqltypes.ARRAY: AsyncpgARRAY,
+            BIT: AsyncpgBit,
             CITEXT: CITEXT,
             REGCONFIG: AsyncpgREGCONFIG,
             sqltypes.Time: AsyncpgTime,