gh-107954: Add PyConfig_MEMBER_BOOL type to PyConfigSpec (#116359)

_PyConfig_AsDict() now returns bool objects for options using the new
PyConfig_MEMBER_BOOL type.

Update tests for these changes.

diff --git a/Lib/test/_test_embed_set_config.py b/Lib/test/_test_embed_set_config.py
index a2ddd133cf47c87b5cb464ec6f8b275e9f72b85c..75b6b7d1b39fa49aa628db6654f58285d99c7b2a 100644 (file)
--- a/Lib/test/_test_embed_set_config.py
+++ b/Lib/test/_test_embed_set_config.py
@@ -14,6 +14,43 @@ from test.support import MS_WINDOWS
 
 MAX_HASH_SEED = 4294967295
 
+
+BOOL_OPTIONS = [
+    'isolated',
+    'use_environment',
+    'dev_mode',
+    'install_signal_handlers',
+    'use_hash_seed',
+    'faulthandler',
+    'import_time',
+    'code_debug_ranges',
+    'show_ref_count',
+    'dump_refs',
+    'malloc_stats',
+    'parse_argv',
+    'site_import',
+    'warn_default_encoding',
+    'inspect',
+    'interactive',
+    'parser_debug',
+    'write_bytecode',
+    'quiet',
+    'user_site_directory',
+    'configure_c_stdio',
+    'buffered_stdio',
+    'use_frozen_modules',
+    'safe_path',
+    'pathconfig_warnings',
+    'module_search_paths_set',
+    'skip_source_first_line',
+    '_install_importlib',
+    '_init_main',
+    '_is_python_build',
+]
+if MS_WINDOWS:
+    BOOL_OPTIONS.append('legacy_windows_stdio')
+
+
 class SetConfigTests(unittest.TestCase):
     def setUp(self):
         self.old_config = _testinternalcapi.get_config()
@@ -52,42 +89,15 @@ class SetConfigTests(unittest.TestCase):
         ]
 
         # int (unsigned)
-        options = [
+        int_options = [
             '_config_init',
-            'isolated',
-            'use_environment',
-            'dev_mode',
-            'install_signal_handlers',
-            'use_hash_seed',
-            'faulthandler',
-            'tracemalloc',
-            'import_time',
-            'code_debug_ranges',
-            'show_ref_count',
-            'dump_refs',
-            'malloc_stats',
-            'parse_argv',
-            'site_import',
             'bytes_warning',
-            'inspect',
-            'interactive',
             'optimization_level',
-            'parser_debug',
-            'write_bytecode',
+            'tracemalloc',
             'verbose',
-            'quiet',
-            'user_site_directory',
-            'configure_c_stdio',
-            'buffered_stdio',
-            'pathconfig_warnings',
-            'module_search_paths_set',
-            'skip_source_first_line',
-            '_install_importlib',
-            '_init_main',
         ]
-        if MS_WINDOWS:
-            options.append('legacy_windows_stdio')
-        for key in options:
+        int_options.extend(BOOL_OPTIONS)
+        for key in int_options:
             value_tests.append((key, invalid_uint))
             type_tests.append((key, "abc"))
             type_tests.append((key, 2.0))
@@ -148,6 +158,7 @@ class SetConfigTests(unittest.TestCase):
                         _testinternalcapi.set_config(config)
 
     def test_flags(self):
+        bool_options = set(BOOL_OPTIONS)
         for sys_attr, key, value in (
             ("debug", "parser_debug", 1),
             ("inspect", "inspect", 2),
@@ -160,7 +171,10 @@ class SetConfigTests(unittest.TestCase):
         ):
             with self.subTest(sys=sys_attr, key=key, value=value):
                 self.set_config(**{key: value, 'parse_argv': 0})
-                self.assertEqual(getattr(sys.flags, sys_attr), value)
+                if key in bool_options:
+                    self.assertEqual(getattr(sys.flags, sys_attr), int(bool(value)))
+                else:
+                    self.assertEqual(getattr(sys.flags, sys_attr), value)
 
         self.set_config(write_bytecode=0)
         self.assertEqual(sys.flags.dont_write_bytecode, True)

diff --git a/Lib/test/test_cmd_line.py b/Lib/test/test_cmd_line.py
index 1fe3b2fe53c0b63216ee7d0790daffe7647aa2e6..6796dc6e3570e976112f7f7a078e7e97f099bf52 100644 (file)
--- a/Lib/test/test_cmd_line.py
+++ b/Lib/test/test_cmd_line.py
@@ -634,15 +634,13 @@ class CmdLineTest(unittest.TestCase):
                 PYTHONDONTWRITEBYTECODE=value,
                 PYTHONVERBOSE=value,
             )
-            dont_write_bytecode = int(bool(value))
+            expected_bool = int(bool(value))
             code = (
                 "import sys; "
                 "sys.stderr.write(str(sys.flags)); "
                 f"""sys.exit(not (
-                    sys.flags.debug == sys.flags.optimize ==
-                    sys.flags.verbose ==
-                    {expected}
-                    and sys.flags.dont_write_bytecode == {dont_write_bytecode}
+                    sys.flags.optimize == sys.flags.verbose == {expected}
+                    and sys.flags.debug == sys.flags.dont_write_bytecode == {expected_bool}
                 ))"""
             )
             with self.subTest(envar_value=value):

diff --git a/Lib/test/test_embed.py b/Lib/test/test_embed.py
index 6c60854bbd76cc0a923ed57841414a3f3b657926..55d3acf448540afeac0afd8aa2a3738f06ef8ee0 100644 (file)
--- a/Lib/test/test_embed.py
+++ b/Lib/test/test_embed.py
@@ -443,31 +443,31 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
 
     CONFIG_COMPAT = {
         '_config_init': API_COMPAT,
-        'isolated': 0,
-        'use_environment': 1,
-        'dev_mode': 0,
+        'isolated': False,
+        'use_environment': True,
+        'dev_mode': False,
 
-        'install_signal_handlers': 1,
-        'use_hash_seed': 0,
+        'install_signal_handlers': True,
+        'use_hash_seed': False,
         'hash_seed': 0,
         'int_max_str_digits': sys.int_info.default_max_str_digits,
         'cpu_count': -1,
-        'faulthandler': 0,
+        'faulthandler': False,
         'tracemalloc': 0,
-        'perf_profiling': 0,
-        'import_time': 0,
-        'code_debug_ranges': 1,
-        'show_ref_count': 0,
-        'dump_refs': 0,
+        'perf_profiling': False,
+        'import_time': False,
+        'code_debug_ranges': True,
+        'show_ref_count': False,
+        'dump_refs': False,
         'dump_refs_file': None,
-        'malloc_stats': 0,
+        'malloc_stats': False,
 
         'filesystem_encoding': GET_DEFAULT_CONFIG,
         'filesystem_errors': GET_DEFAULT_CONFIG,
 
         'pycache_prefix': None,
         'program_name': GET_DEFAULT_CONFIG,
-        'parse_argv': 0,
+        'parse_argv': False,
         'argv': [""],
         'orig_argv': [],
 
@@ -484,39 +484,39 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
         'exec_prefix': GET_DEFAULT_CONFIG,
         'base_exec_prefix': GET_DEFAULT_CONFIG,
         'module_search_paths': GET_DEFAULT_CONFIG,
-        'module_search_paths_set': 1,
+        'module_search_paths_set': True,
         'platlibdir': sys.platlibdir,
         'stdlib_dir': GET_DEFAULT_CONFIG,
 
-        'site_import': 1,
+        'site_import': True,
         'bytes_warning': 0,
-        'warn_default_encoding': 0,
-        'inspect': 0,
-        'interactive': 0,
+        'warn_default_encoding': False,
+        'inspect': False,
+        'interactive': False,
         'optimization_level': 0,
-        'parser_debug': 0,
-        'write_bytecode': 1,
+        'parser_debug': False,
+        'write_bytecode': True,
         'verbose': 0,
-        'quiet': 0,
-        'user_site_directory': 1,
-        'configure_c_stdio': 0,
-        'buffered_stdio': 1,
+        'quiet': False,
+        'user_site_directory': True,
+        'configure_c_stdio': False,
+        'buffered_stdio': True,
 
         'stdio_encoding': GET_DEFAULT_CONFIG,
         'stdio_errors': GET_DEFAULT_CONFIG,
 
-        'skip_source_first_line': 0,
+        'skip_source_first_line': False,
         'run_command': None,
         'run_module': None,
         'run_filename': None,
         'sys_path_0': None,
 
-        '_install_importlib': 1,
+        '_install_importlib': True,
         'check_hash_pycs_mode': 'default',
-        'pathconfig_warnings': 1,
-        '_init_main': 1,
+        'pathconfig_warnings': True,
+        '_init_main': True,
         'use_frozen_modules': not support.Py_DEBUG,
-        'safe_path': 0,
+        'safe_path': False,
         '_is_python_build': IGNORE_CONFIG,
     }
     if Py_STATS:
@@ -530,22 +530,22 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
 
     CONFIG_PYTHON = dict(CONFIG_COMPAT,
         _config_init=API_PYTHON,
-        configure_c_stdio=1,
-        parse_argv=2,
+        configure_c_stdio=True,
+        parse_argv=True,
     )
     CONFIG_ISOLATED = dict(CONFIG_COMPAT,
         _config_init=API_ISOLATED,
-        isolated=1,
-        use_environment=0,
-        user_site_directory=0,
-        safe_path=1,
-        dev_mode=0,
-        install_signal_handlers=0,
-        use_hash_seed=0,
-        faulthandler=0,
+        isolated=True,
+        use_environment=False,
+        user_site_directory=False,
+        safe_path=True,
+        dev_mode=False,
+        install_signal_handlers=False,
+        use_hash_seed=False,
+        faulthandler=False,
         tracemalloc=0,
-        perf_profiling=0,
-        pathconfig_warnings=0,
+        perf_profiling=False,
+        pathconfig_warnings=False,
     )
     if MS_WINDOWS:
         CONFIG_ISOLATED['legacy_windows_stdio'] = 0
@@ -851,15 +851,15 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             'utf8_mode': 1,
         }
         config = {
-            'install_signal_handlers': 0,
-            'use_hash_seed': 1,
+            'install_signal_handlers': False,
+            'use_hash_seed': True,
             'hash_seed': 123,
             'tracemalloc': 2,
-            'perf_profiling': 0,
-            'import_time': 1,
-            'code_debug_ranges': 0,
-            'show_ref_count': 1,
-            'malloc_stats': 1,
+            'perf_profiling': False,
+            'import_time': True,
+            'code_debug_ranges': False,
+            'show_ref_count': True,
+            'malloc_stats': True,
 
             'stdio_encoding': 'iso8859-1',
             'stdio_errors': 'replace',
@@ -872,7 +872,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
                           '-X', 'cmdline_xoption',
                           '-c', 'pass',
                           'arg2'],
-            'parse_argv': 2,
+            'parse_argv': True,
             'xoptions': [
                 'config_xoption1=3',
                 'config_xoption2=',
@@ -886,26 +886,26 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             ],
             'run_command': 'pass\n',
 
-            'site_import': 0,
+            'site_import': False,
             'bytes_warning': 1,
-            'inspect': 1,
-            'interactive': 1,
+            'inspect': True,
+            'interactive': True,
             'optimization_level': 2,
-            'write_bytecode': 0,
+            'write_bytecode': False,
             'verbose': 1,
-            'quiet': 1,
-            'configure_c_stdio': 1,
-            'buffered_stdio': 0,
-            'user_site_directory': 0,
-            'faulthandler': 1,
+            'quiet': True,
+            'configure_c_stdio': True,
+            'buffered_stdio': False,
+            'user_site_directory': False,
+            'faulthandler': True,
             'platlibdir': 'my_platlibdir',
             'module_search_paths': self.IGNORE_CONFIG,
-            'safe_path': 1,
+            'safe_path': True,
             'int_max_str_digits': 31337,
             'cpu_count': 4321,
 
             'check_hash_pycs_mode': 'always',
-            'pathconfig_warnings': 0,
+            'pathconfig_warnings': False,
         }
         if Py_STATS:
             config['_pystats'] = 1
@@ -917,28 +917,28 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             'allocator': ALLOCATOR_FOR_CONFIG,
         }
         config = {
-            'use_hash_seed': 1,
+            'use_hash_seed': True,
             'hash_seed': 42,
             'tracemalloc': 2,
-            'perf_profiling': 0,
-            'import_time': 1,
-            'code_debug_ranges': 0,
-            'malloc_stats': 1,
-            'inspect': 1,
+            'perf_profiling': False,
+            'import_time': True,
+            'code_debug_ranges': False,
+            'malloc_stats': True,
+            'inspect': True,
             'optimization_level': 2,
             'pythonpath_env': '/my/path',
             'pycache_prefix': 'env_pycache_prefix',
-            'write_bytecode': 0,
+            'write_bytecode': False,
             'verbose': 1,
-            'buffered_stdio': 0,
+            'buffered_stdio': False,
             'stdio_encoding': 'iso8859-1',
             'stdio_errors': 'replace',
-            'user_site_directory': 0,
-            'faulthandler': 1,
+            'user_site_directory': False,
+            'faulthandler': True,
             'warnoptions': ['EnvVar'],
             'platlibdir': 'env_platlibdir',
             'module_search_paths': self.IGNORE_CONFIG,
-            'safe_path': 1,
+            'safe_path': True,
             'int_max_str_digits': 4567,
         }
         if Py_STATS:
@@ -952,32 +952,32 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             'utf8_mode': 1,
         }
         config = {
-            'use_hash_seed': 1,
+            'use_hash_seed': True,
             'hash_seed': 42,
             'tracemalloc': 2,
-            'perf_profiling': 0,
-            'import_time': 1,
-            'code_debug_ranges': 0,
-            'malloc_stats': 1,
-            'inspect': 1,
+            'perf_profiling': False,
+            'import_time': True,
+            'code_debug_ranges': False,
+            'malloc_stats': True,
+            'inspect': True,
             'optimization_level': 2,
             'pythonpath_env': '/my/path',
             'pycache_prefix': 'env_pycache_prefix',
-            'write_bytecode': 0,
+            'write_bytecode': False,
             'verbose': 1,
-            'buffered_stdio': 0,
+            'buffered_stdio': False,
             'stdio_encoding': 'iso8859-1',
             'stdio_errors': 'replace',
-            'user_site_directory': 0,
-            'faulthandler': 1,
+            'user_site_directory': False,
+            'faulthandler': True,
             'warnoptions': ['EnvVar'],
             'platlibdir': 'env_platlibdir',
             'module_search_paths': self.IGNORE_CONFIG,
-            'safe_path': 1,
+            'safe_path': True,
             'int_max_str_digits': 4567,
         }
         if Py_STATS:
-            config['_pystats'] = 1
+            config['_pystats'] = True
         self.check_all_configs("test_init_python_env", config, preconfig,
                                api=API_PYTHON)
 
@@ -1002,8 +1002,8 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             'allocator': PYMEM_ALLOCATOR_DEBUG,
         }
         config = {
-            'faulthandler': 1,
-            'dev_mode': 1,
+            'faulthandler': True,
+            'dev_mode': True,
             'warnoptions': ['default'],
         }
         self.check_all_configs("test_init_dev_mode", config, preconfig,
@@ -1019,11 +1019,11 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             'argv': ['script.py'],
             'orig_argv': ['python3', '-X', 'dev', '-P', 'script.py'],
             'run_filename': os.path.abspath('script.py'),
-            'dev_mode': 1,
-            'faulthandler': 1,
+            'dev_mode': True,
+            'faulthandler': True,
             'warnoptions': ['default'],
             'xoptions': ['dev'],
-            'safe_path': 1,
+            'safe_path': True,
         }
         self.check_all_configs("test_preinit_parse_argv", config, preconfig,
                                api=API_PYTHON)
@@ -1048,30 +1048,30 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
 
     def test_init_isolated_flag(self):
         config = {
-            'isolated': 1,
-            'safe_path': 1,
-            'use_environment': 0,
-            'user_site_directory': 0,
+            'isolated': True,
+            'safe_path': True,
+            'use_environment': False,
+            'user_site_directory': False,
         }
         self.check_all_configs("test_init_isolated_flag", config, api=API_PYTHON)
 
     def test_preinit_isolated1(self):
         # _PyPreConfig.isolated=1, _PyCoreConfig.isolated not set
         config = {
-            'isolated': 1,
-            'safe_path': 1,
-            'use_environment': 0,
-            'user_site_directory': 0,
+            'isolated': True,
+            'safe_path': True,
+            'use_environment': False,
+            'user_site_directory': False,
         }
         self.check_all_configs("test_preinit_isolated1", config, api=API_COMPAT)
 
     def test_preinit_isolated2(self):
         # _PyPreConfig.isolated=0, _PyCoreConfig.isolated=1
         config = {
-            'isolated': 1,
-            'safe_path': 1,
-            'use_environment': 0,
-            'user_site_directory': 0,
+            'isolated': True,
+            'safe_path': True,
+            'use_environment': False,
+            'user_site_directory': False,
         }
         self.check_all_configs("test_preinit_isolated2", config, api=API_COMPAT)
 
@@ -1139,7 +1139,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             'orig_argv': ['python3', '-c', code, 'arg2'],
             'program_name': './python3',
             'run_command': code + '\n',
-            'parse_argv': 2,
+            'parse_argv': True,
             'sys_path_0': '',
         }
         self.check_all_configs("test_init_run_main", config, api=API_PYTHON)
@@ -1154,7 +1154,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
                           'arg2'],
             'program_name': './python3',
             'run_command': code + '\n',
-            'parse_argv': 2,
+            'parse_argv': True,
             '_init_main': 0,
             'sys_path_0': '',
         }
@@ -1164,12 +1164,12 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
 
     def test_init_parse_argv(self):
         config = {
-            'parse_argv': 2,
+            'parse_argv': True,
             'argv': ['-c', 'arg1', '-v', 'arg3'],
             'orig_argv': ['./argv0', '-E', '-c', 'pass', 'arg1', '-v', 'arg3'],
             'program_name': './argv0',
             'run_command': 'pass\n',
-            'use_environment': 0,
+            'use_environment': False,
         }
         self.check_all_configs("test_init_parse_argv", config, api=API_PYTHON)
 
@@ -1178,7 +1178,7 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
             'parse_argv': 0,
         }
         config = {
-            'parse_argv': 0,
+            'parse_argv': False,
             'argv': ['./argv0', '-E', '-c', 'pass', 'arg1', '-v', 'arg3'],
             'orig_argv': ['./argv0', '-E', '-c', 'pass', 'arg1', '-v', 'arg3'],
             'program_name': './argv0',
@@ -1653,20 +1653,20 @@ class InitConfigTests(EmbeddingTestsMixin, unittest.TestCase):
 
     def test_init_use_frozen_modules(self):
         tests = {
-            ('=on', 1),
-            ('=off', 0),
-            ('=', 1),
-            ('', 1),
+            ('=on', True),
+            ('=off', False),
+            ('=', True),
+            ('', True),
         }
         for raw, expected in tests:
             optval = f'frozen_modules{raw}'
             config = {
-                'parse_argv': 2,
+                'parse_argv': True,
                 'argv': ['-c'],
                 'orig_argv': ['./argv0', '-X', optval, '-c', 'pass'],
                 'program_name': './argv0',
                 'run_command': 'pass\n',
-                'use_environment': 1,
+                'use_environment': True,
                 'xoptions': [optval],
                 'use_frozen_modules': expected,
             }
@@ -1792,9 +1792,9 @@ class MiscTests(EmbeddingTestsMixin, unittest.TestCase):
             sys.argv ['./argv0', '-E', 'arg1', 'arg2']
             config program_name: ./argv0
             config executable: {executable}
-            config use_environment: 1
-            config configure_c_stdio: 1
-            config buffered_stdio: 0
+            config use_environment: True
+            config configure_c_stdio: True
+            config buffered_stdio: False
         """).lstrip()
         self.assertEqual(out, expected)
 

diff --git a/Python/initconfig.c b/Python/initconfig.c
index 74f28f3b39175b19e000259bd4fc5c247d80b8c9..17c95171d9528a5f9899db2f3d991ef1c152c81c 100644 (file)
--- a/Python/initconfig.c
+++ b/Python/initconfig.c
@@ -30,6 +30,7 @@ typedef enum {
     PyConfig_MEMBER_INT = 0,
     PyConfig_MEMBER_UINT = 1,
     PyConfig_MEMBER_ULONG = 2,
+    PyConfig_MEMBER_BOOL = 3,
 
     PyConfig_MEMBER_WSTR = 10,
     PyConfig_MEMBER_WSTR_OPT = 11,
@@ -45,61 +46,62 @@ typedef struct {
 #define SPEC(MEMBER, TYPE) \
     {#MEMBER, offsetof(PyConfig, MEMBER), PyConfig_MEMBER_##TYPE}
 
+// Update _test_embed_set_config when adding new members
 static const PyConfigSpec PYCONFIG_SPEC[] = {
     SPEC(_config_init, UINT),
-    SPEC(isolated, UINT),
-    SPEC(use_environment, UINT),
-    SPEC(dev_mode, UINT),
-    SPEC(install_signal_handlers, UINT),
-    SPEC(use_hash_seed, UINT),
+    SPEC(isolated, BOOL),
+    SPEC(use_environment, BOOL),
+    SPEC(dev_mode, BOOL),
+    SPEC(install_signal_handlers, BOOL),
+    SPEC(use_hash_seed, BOOL),
     SPEC(hash_seed, ULONG),
-    SPEC(faulthandler, UINT),
+    SPEC(faulthandler, BOOL),
     SPEC(tracemalloc, UINT),
-    SPEC(perf_profiling, UINT),
-    SPEC(import_time, UINT),
-    SPEC(code_debug_ranges, UINT),
-    SPEC(show_ref_count, UINT),
-    SPEC(dump_refs, UINT),
+    SPEC(perf_profiling, BOOL),
+    SPEC(import_time, BOOL),
+    SPEC(code_debug_ranges, BOOL),
+    SPEC(show_ref_count, BOOL),
+    SPEC(dump_refs, BOOL),
     SPEC(dump_refs_file, WSTR_OPT),
-    SPEC(malloc_stats, UINT),
+    SPEC(malloc_stats, BOOL),
     SPEC(filesystem_encoding, WSTR),
     SPEC(filesystem_errors, WSTR),
     SPEC(pycache_prefix, WSTR_OPT),
-    SPEC(parse_argv, UINT),
+    SPEC(parse_argv, BOOL),
     SPEC(orig_argv, WSTR_LIST),
     SPEC(argv, WSTR_LIST),
     SPEC(xoptions, WSTR_LIST),
     SPEC(warnoptions, WSTR_LIST),
-    SPEC(site_import, UINT),
+    SPEC(site_import, BOOL),
     SPEC(bytes_warning, UINT),
-    SPEC(warn_default_encoding, UINT),
-    SPEC(inspect, UINT),
-    SPEC(interactive, UINT),
+    SPEC(warn_default_encoding, BOOL),
+    SPEC(inspect, BOOL),
+    SPEC(interactive, BOOL),
     SPEC(optimization_level, UINT),
-    SPEC(parser_debug, UINT),
-    SPEC(write_bytecode, UINT),
+    SPEC(parser_debug, BOOL),
+    SPEC(write_bytecode, BOOL),
     SPEC(verbose, UINT),
-    SPEC(quiet, UINT),
-    SPEC(user_site_directory, UINT),
-    SPEC(configure_c_stdio, UINT),
-    SPEC(buffered_stdio, UINT),
+    SPEC(quiet, BOOL),
+    SPEC(user_site_directory, BOOL),
+    SPEC(configure_c_stdio, BOOL),
+    SPEC(buffered_stdio, BOOL),
     SPEC(stdio_encoding, WSTR),
     SPEC(stdio_errors, WSTR),
 #ifdef MS_WINDOWS
-    SPEC(legacy_windows_stdio, UINT),
+    SPEC(legacy_windows_stdio, BOOL),
 #endif
     SPEC(check_hash_pycs_mode, WSTR),
-    SPEC(use_frozen_modules, UINT),
-    SPEC(safe_path, UINT),
+    SPEC(use_frozen_modules, BOOL),
+    SPEC(safe_path, BOOL),
     SPEC(int_max_str_digits, INT),
     SPEC(cpu_count, INT),
-    SPEC(pathconfig_warnings, UINT),
+    SPEC(pathconfig_warnings, BOOL),
     SPEC(program_name, WSTR),
     SPEC(pythonpath_env, WSTR_OPT),
     SPEC(home, WSTR_OPT),
     SPEC(platlibdir, WSTR),
     SPEC(sys_path_0, WSTR_OPT),
-    SPEC(module_search_paths_set, UINT),
+    SPEC(module_search_paths_set, BOOL),
     SPEC(module_search_paths, WSTR_LIST),
     SPEC(stdlib_dir, WSTR_OPT),
     SPEC(executable, WSTR_OPT),
@@ -108,15 +110,15 @@ static const PyConfigSpec PYCONFIG_SPEC[] = {
     SPEC(base_prefix, WSTR_OPT),
     SPEC(exec_prefix, WSTR_OPT),
     SPEC(base_exec_prefix, WSTR_OPT),
-    SPEC(skip_source_first_line, UINT),
+    SPEC(skip_source_first_line, BOOL),
     SPEC(run_command, WSTR_OPT),
     SPEC(run_module, WSTR_OPT),
     SPEC(run_filename, WSTR_OPT),
-    SPEC(_install_importlib, UINT),
-    SPEC(_init_main, UINT),
-    SPEC(_is_python_build, UINT),
+    SPEC(_install_importlib, BOOL),
+    SPEC(_init_main, BOOL),
+    SPEC(_is_python_build, BOOL),
 #ifdef Py_STATS
-    SPEC(_pystats, UINT),
+    SPEC(_pystats, BOOL),
 #endif
 #ifdef Py_DEBUG
     SPEC(run_presite, WSTR_OPT),
@@ -1007,6 +1009,7 @@ _PyConfig_Copy(PyConfig *config, const PyConfig *config2)
         switch (spec->type) {
         case PyConfig_MEMBER_INT:
         case PyConfig_MEMBER_UINT:
+        case PyConfig_MEMBER_BOOL:
         {
             *(int*)member = *(int*)member2;
             break;
@@ -1062,6 +1065,12 @@ _PyConfig_AsDict(const PyConfig *config)
             obj = PyLong_FromLong(value);
             break;
         }
+        case PyConfig_MEMBER_BOOL:
+        {
+            int value = *(int*)member;
+            obj = PyBool_FromLong(value);
+            break;
+        }
         case PyConfig_MEMBER_ULONG:
         {
             unsigned long value = *(unsigned long*)member;
@@ -1285,19 +1294,20 @@ _PyConfig_FromDict(PyConfig *config, PyObject *dict)
         char *member = (char *)config + spec->offset;
         switch (spec->type) {
         case PyConfig_MEMBER_INT:
-            if (config_dict_get_int(dict, spec->name, (int*)member) < 0) {
-                return -1;
-            }
-            break;
         case PyConfig_MEMBER_UINT:
+        case PyConfig_MEMBER_BOOL:
         {
             int value;
             if (config_dict_get_int(dict, spec->name, &value) < 0) {
                 return -1;
             }
-            if (value < 0) {
-                config_dict_invalid_value(spec->name);
-                return -1;
+            if (spec->type == PyConfig_MEMBER_BOOL
+                || spec->type == PyConfig_MEMBER_UINT)
+            {
+                if (value < 0) {
+                    config_dict_invalid_value(spec->name);
+                    return -1;
+                }
             }
             *(int*)member = value;
             break;