bpo-46425: fix direct invocation of test_sqlite3

Lib/test/test_sqlite3/test_hooks.py

@@ -24,7 +24,7 @@
 import sqlite3 as sqlite
 
 from test.support.os_helper import TESTFN, unlink
-from .test_userfunctions import with_tracebacks
+from test.test_sqlite3.test_userfunctions import with_tracebacks
 
 class CollationTests(unittest.TestCase):
     def test_create_collation_not_string(self):

Lib/test/test_sqlite3/test_regression.py

@@ -21,14 +21,13 @@
 # 3. This notice may not be removed or altered from any source distribution.
 
 import datetime
-import sys
 import unittest
 import sqlite3 as sqlite
 import weakref
 import functools
-from test import support
 
-from .test_dbapi import memory_database, managed_connect, cx_limit
+from test import support
+from test.test_sqlite3.test_dbapi import memory_database, managed_connect, cx_limit
 
 
 class RegressionTests(unittest.TestCase):

Lib/test/test_sqlite3/test_transactions.py

@@ -23,7 +23,7 @@
 import os, unittest
 import sqlite3 as sqlite
 
-from .test_dbapi import memory_database
+from test.test_sqlite3.test_dbapi import memory_database
 
 def get_db_path():
     return "sqlite_testdb"

Lib/test/test_sqlite3/test_userfunctions.py

@@ -32,7 +32,7 @@
 import sqlite3 as sqlite
 
 from test.support import bigmemtest, catch_unraisable_exception
-from .test_dbapi import cx_limit
+from test.test_sqlite3.test_dbapi import cx_limit
 
 
 def with_tracebacks(exc, regex="", name=""):