gh-120417: Remove unused imports in tests (part 1) (#120629)

Author: vstinner

Lib/test/_test_embed_set_config.py

@@ -6,7 +6,6 @@
 # (before the site module is run).
 
 import _testinternalcapi
-import os
 import sys
 import unittest
 from test import support

Lib/test/support/__init__.py

@@ -4,7 +4,6 @@
     raise ImportError('support must be imported from the test package')
 
 import contextlib
-import dataclasses
 import functools
 import _opcode
 import os

Lib/test/test___all__.py

@@ -3,7 +3,6 @@
 from test.support import warnings_helper
 import os
 import sys
-import types
 
 
 if support.check_sanitizer(address=True, memory=True):

Lib/test/test_call.py

@@ -1,6 +1,6 @@
 import unittest
 from test.support import (cpython_only, is_wasi, requires_limited_api, Py_DEBUG,
-                          set_recursion_limit, skip_on_s390x, import_helper)
+                          set_recursion_limit, skip_on_s390x)
 try:
     import _testcapi
 except ImportError:
@@ -14,7 +14,6 @@
 import itertools
 import gc
 import contextlib
-import sys
 import types
 
 

Lib/test/test_capi/test_list.py

@@ -1,5 +1,3 @@
-import gc
-import weakref
 import unittest
 from test.support import import_helper
 from collections import UserList

Lib/test/test_capi/test_misc.py

@@ -17,7 +17,6 @@
 import time
 import types
 import unittest
-import warnings
 import weakref
 import operator
 from test import support

Lib/test/test_capi/test_structmembers.py

@@ -1,6 +1,5 @@
 import unittest
 from test.support import import_helper
-from test.support import warnings_helper
 
 # Skip this test if the _testcapi module isn't available.
 import_helper.import_module('_testcapi')

Lib/test/test_concurrent_futures/executor.py

@@ -1,6 +1,5 @@
 import threading
 import time
-import unittest
 import weakref
 from concurrent import futures
 from test import support

Lib/test/test_ctypes/test_generated_structs.py

@@ -14,10 +14,9 @@
 import re
 from dataclasses import dataclass
 from functools import cached_property
-import sys
 
 import ctypes
-from ctypes import Structure, Union, _SimpleCData
+from ctypes import Structure, Union
 from ctypes import sizeof, alignment, pointer, string_at
 _ctypes_test = import_helper.import_module("_ctypes_test")
 

Lib/test/test_ctypes/test_structures.py

@@ -2,7 +2,7 @@
 import struct
 import sys
 import unittest
-from ctypes import (CDLL, Array, Structure, Union, POINTER, sizeof, byref, alignment,
+from ctypes import (CDLL, Structure, Union, POINTER, sizeof, byref, alignment,
                     c_void_p, c_char, c_wchar, c_byte, c_ubyte,
                     c_uint8, c_uint16, c_uint32,
                     c_short, c_ushort, c_int, c_uint,