diff --git a/MySQLdb/connections.py b/MySQLdb/connections.py
index 11b996d..27a0477 100644
--- a/MySQLdb/connections.py
+++ b/MySQLdb/connections.py
@@ -5,10 +5,9 @@ want to make your own subclasses. In most cases, you will probably
 override Connection.default_cursor with a non-standard Cursor class.
 """
 import re
-import sys
 
-from MySQLdb import cursors, _mysql
-from MySQLdb._exceptions import (
+from . import cursors, _mysql
+from ._exceptions import (
     Warning, Error, InterfaceError, DataError,
     DatabaseError, OperationalError, IntegrityError, InternalError,
     NotSupportedError, ProgrammingError,
diff --git a/MySQLdb/cursors.py b/MySQLdb/cursors.py
index c70d0f3..9d1bda2 100644
--- a/MySQLdb/cursors.py
+++ b/MySQLdb/cursors.py
@@ -3,14 +3,9 @@
 This module implements Cursors of various types for MySQLdb. By
 default, MySQLdb uses the Cursor class.
 """
-from functools import partial
 import re
-import sys
 
-from ._exceptions import (
-    Warning, Error, InterfaceError, DataError,
-    DatabaseError, OperationalError, IntegrityError, InternalError,
-    NotSupportedError, ProgrammingError)
+from ._exceptions import ProgrammingError
 
 
 #: Regular expression for :meth:`Cursor.executemany`.