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gh-77782: Deprecate global configuration variable by vstinner · Pull Request #93943 · python/cpython · GitHub

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gh-77782: Deprecate global configuration variable #93943

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vstinner merged 1 commit into from
Jun 17, 2022
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gh-77782: Deprecate global configuration variable #93943

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29 changes: 29 additions & 0 deletions Doc/whatsnew/3.12.rst
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Expand Up @@ -257,6 +257,35 @@ Porting to Python 3.12
Deprecated
----------

* Deprecate global configuration variable:

* :c:var:`Py_DebugFlag`: use :c:member:`PyConfig.parser_debug`
* :c:var:`Py_VerboseFlag`: use :c:member:`PyConfig.verbose`
* :c:var:`Py_QuietFlag`: use :c:member:`PyConfig.quiet`
* :c:var:`Py_InteractiveFlag`: use :c:member:`PyConfig.interactive`
* :c:var:`Py_InspectFlag`: use :c:member:`PyConfig.inspect`
* :c:var:`Py_OptimizeFlag`: use :c:member:`PyConfig.optimization_level`
* :c:var:`Py_NoSiteFlag`: use :c:member:`PyConfig.site_import`
* :c:var:`Py_BytesWarningFlag`: use :c:member:`PyConfig.bytes_warning`
* :c:var:`Py_FrozenFlag`: use :c:member:`PyConfig.pathconfig_warnings`
* :c:var:`Py_IgnoreEnvironmentFlag`: use :c:member:`PyConfig.use_environment`
* :c:var:`Py_DontWriteBytecodeFlag`: use :c:member:`PyConfig.write_bytecode`
* :c:var:`Py_NoUserSiteDirectory`: use :c:member:`PyConfig.user_site_directory`
* :c:var:`Py_UnbufferedStdioFlag`: use :c:member:`PyConfig.buffered_stdio`
* :c:var:`Py_HashRandomizationFlag`: use :c:member:`PyConfig.use_hash_seed`
and :c:member:`PyConfig.hash_seed`
* :c:var:`Py_IsolatedFlag`: use :c:member:`PyConfig.isolated`
* :c:var:`Py_LegacyWindowsFSEncodingFlag`: use :c:member:`PyConfig.legacy_windows_fs_encoding`
* :c:var:`Py_LegacyWindowsStdioFlag`: use :c:member:`PyConfig.legacy_windows_stdio`
* :c:var:`Py_FileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
* :c:var:`Py_FileSystemDefaultEncodeErrors`: use :c:member:`PyConfig.filesystem_errors`
* :c:var:`Py_UTF8Mode`: use :c:member:`PyPreConfig.utf8_mode` (see :c:func:`Py_PreInitialize`)

The :c:func:`Py_InitializeFromConfig` API should be used with
:c:type:`PyConfig` instead.
(Contributed by Victor Stinner in :gh:`77782`.)


Removed
-------

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36 changes: 18 additions & 18 deletions Include/cpython/pydebug.h
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Expand Up @@ -5,31 +5,31 @@
extern "C" {
#endif

PyAPI_DATA(int) Py_DebugFlag;
PyAPI_DATA(int) Py_VerboseFlag;
PyAPI_DATA(int) Py_QuietFlag;
PyAPI_DATA(int) Py_InteractiveFlag;
PyAPI_DATA(int) Py_InspectFlag;
PyAPI_DATA(int) Py_OptimizeFlag;
PyAPI_DATA(int) Py_NoSiteFlag;
PyAPI_DATA(int) Py_BytesWarningFlag;
PyAPI_DATA(int) Py_FrozenFlag;
PyAPI_DATA(int) Py_IgnoreEnvironmentFlag;
PyAPI_DATA(int) Py_DontWriteBytecodeFlag;
PyAPI_DATA(int) Py_NoUserSiteDirectory;
PyAPI_DATA(int) Py_UnbufferedStdioFlag;
PyAPI_DATA(int) Py_HashRandomizationFlag;
PyAPI_DATA(int) Py_IsolatedFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_DebugFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_VerboseFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_QuietFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_InteractiveFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_InspectFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_OptimizeFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_NoSiteFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_BytesWarningFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_FrozenFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_IgnoreEnvironmentFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_DontWriteBytecodeFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_NoUserSiteDirectory;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_UnbufferedStdioFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_HashRandomizationFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_IsolatedFlag;

#ifdef MS_WINDOWS
PyAPI_DATA(int) Py_LegacyWindowsFSEncodingFlag;
PyAPI_DATA(int) Py_LegacyWindowsStdioFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_LegacyWindowsFSEncodingFlag;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_LegacyWindowsStdioFlag;
#endif

/* this is a wrapper around getenv() that pays attention to
Py_IgnoreEnvironmentFlag. It should be used for getting variables like
PYTHONPATH and PYTHONHOME from the environment */
PyAPI_DATA(char*) Py_GETENV(const char *name);
PyAPI_FUNC(char*) Py_GETENV(const char *name);

#ifdef __cplusplus
}
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5 changes: 4 additions & 1 deletion Include/cpython/pystate.h
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Original file line number Diff line number Diff line change
Expand Up @@ -279,7 +279,10 @@ PyAPI_FUNC(const PyConfig*) _PyInterpreterState_GetConfig(PyInterpreterState *in
for example.

Python must be preinitialized to call this method.
The caller must hold the GIL. */
The caller must hold the GIL.

Once done with the configuration, PyConfig_Clear() must be called to clear
it. */
PyAPI_FUNC(int) _PyInterpreterState_GetConfigCopy(
struct PyConfig *config);

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6 changes: 3 additions & 3 deletions Include/fileobject.h
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Expand Up @@ -19,14 +19,14 @@ PyAPI_FUNC(int) PyObject_AsFileDescriptor(PyObject *);
/* The default encoding used by the platform file system APIs
If non-NULL, this is different than the default encoding for strings
*/
PyAPI_DATA(const char *) Py_FileSystemDefaultEncoding;
Py_DEPRECATED(3.12) PyAPI_DATA(const char *) Py_FileSystemDefaultEncoding;
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03060000
PyAPI_DATA(const char *) Py_FileSystemDefaultEncodeErrors;
Py_DEPRECATED(3.12) PyAPI_DATA(const char *) Py_FileSystemDefaultEncodeErrors;
#endif
PyAPI_DATA(int) Py_HasFileSystemDefaultEncoding;

#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03070000
PyAPI_DATA(int) Py_UTF8Mode;
Py_DEPRECATED(3.12) PyAPI_DATA(int) Py_UTF8Mode;
#endif

/* A routine to check if a file descriptor can be select()-ed. */
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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/C API/2022-05-23-12-31-04.gh-issue-77782.ugC8dn.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,3 @@
Deprecate global configuration variable like
:c:var:`Py_IgnoreEnvironmentFlag`: the :c:func:`Py_InitializeFromConfig` API
should be instead. Patch by Victor Stinner.
21 changes: 15 additions & 6 deletions Modules/main.c
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Expand Up @@ -479,12 +479,23 @@ pymain_run_interactive_hook(int *exitcode)
}


static void
pymain_set_inspect(PyConfig *config, int inspect)
{
config->inspect = inspect;
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
Py_InspectFlag = inspect;
_Py_COMP_DIAG_POP
}


static int
pymain_run_stdin(PyConfig *config)
{
if (stdin_is_interactive(config)) {
config->inspect = 0;
Py_InspectFlag = 0; /* do exit on SystemExit */
// do exit on SystemExit
pymain_set_inspect(config, 0);

int exitcode;
if (pymain_run_startup(config, &exitcode)) {
Expand Down Expand Up @@ -517,16 +528,14 @@ pymain_repl(PyConfig *config, int *exitcode)
/* Check this environment variable at the end, to give programs the
opportunity to set it from Python. */
if (!config->inspect && _Py_GetEnv(config->use_environment, "PYTHONINSPECT")) {
config->inspect = 1;
Py_InspectFlag = 1;
pymain_set_inspect(config, 1);
}

if (!(config->inspect && stdin_is_interactive(config) && config_run_code(config))) {
return;
}

config->inspect = 0;
Py_InspectFlag = 0;
pymain_set_inspect(config, 0);
if (pymain_run_interactive_hook(exitcode)) {
return;
}
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12 changes: 12 additions & 0 deletions Python/initconfig.c
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Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,8 @@ int Py_LegacyWindowsStdioFlag = 0; /* Uses FileIO instead of WindowsConsoleIO */
static PyObject *
_Py_GetGlobalVariablesAsDict(void)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
PyObject *dict, *obj;

dict = PyDict_New();
Expand Down Expand Up @@ -267,15 +269,19 @@ _Py_GetGlobalVariablesAsDict(void)
#undef SET_ITEM
#undef SET_ITEM_INT
#undef SET_ITEM_STR
_Py_COMP_DIAG_POP
}

char*
Py_GETENV(const char *name)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
if (Py_IgnoreEnvironmentFlag) {
return NULL;
}
return getenv(name);
_Py_COMP_DIAG_POP
}

/* --- PyStatus ----------------------------------------------- */
Expand Down Expand Up @@ -1443,6 +1449,8 @@ config_get_env_dup(PyConfig *config,
static void
config_get_global_vars(PyConfig *config)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
if (config->_config_init != _PyConfig_INIT_COMPAT) {
/* Python and Isolated configuration ignore global variables */
return;
Expand Down Expand Up @@ -1478,13 +1486,16 @@ config_get_global_vars(PyConfig *config)

#undef COPY_FLAG
#undef COPY_NOT_FLAG
_Py_COMP_DIAG_POP
}


/* Set Py_xxx global configuration variables from 'config' configuration. */
static void
config_set_global_vars(const PyConfig *config)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
#define COPY_FLAG(ATTR, VAR) \
if (config->ATTR != -1) { \
VAR = config->ATTR; \
Expand Down Expand Up @@ -1519,6 +1530,7 @@ config_set_global_vars(const PyConfig *config)

#undef COPY_FLAG
#undef COPY_NOT_FLAG
_Py_COMP_DIAG_POP
}


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12 changes: 12 additions & 0 deletions Python/preconfig.c
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Expand Up @@ -24,6 +24,8 @@ int _Py_HasFileSystemDefaultEncodeErrors = 0;
void
_Py_ClearFileSystemEncoding(void)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
if (!Py_HasFileSystemDefaultEncoding && Py_FileSystemDefaultEncoding) {
PyMem_RawFree((char*)Py_FileSystemDefaultEncoding);
Py_FileSystemDefaultEncoding = NULL;
Expand All @@ -32,6 +34,7 @@ _Py_ClearFileSystemEncoding(void)
PyMem_RawFree((char*)Py_FileSystemDefaultEncodeErrors);
Py_FileSystemDefaultEncodeErrors = NULL;
}
_Py_COMP_DIAG_POP
}


Expand All @@ -56,11 +59,14 @@ _Py_SetFileSystemEncoding(const char *encoding, const char *errors)

_Py_ClearFileSystemEncoding();

_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
Py_FileSystemDefaultEncoding = encoding2;
Py_HasFileSystemDefaultEncoding = 0;

Py_FileSystemDefaultEncodeErrors = errors2;
_Py_HasFileSystemDefaultEncodeErrors = 0;
_Py_COMP_DIAG_POP
return 0;
}

Expand Down Expand Up @@ -472,6 +478,8 @@ preconfig_get_global_vars(PyPreConfig *config)
config->ATTR = !(VALUE); \
}

_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
COPY_FLAG(isolated, Py_IsolatedFlag);
COPY_NOT_FLAG(use_environment, Py_IgnoreEnvironmentFlag);
if (Py_UTF8Mode > 0) {
Expand All @@ -480,6 +488,7 @@ preconfig_get_global_vars(PyPreConfig *config)
#ifdef MS_WINDOWS
COPY_FLAG(legacy_windows_fs_encoding, Py_LegacyWindowsFSEncodingFlag);
#endif
_Py_COMP_DIAG_POP

#undef COPY_FLAG
#undef COPY_NOT_FLAG
Expand All @@ -498,12 +507,15 @@ preconfig_set_global_vars(const PyPreConfig *config)
VAR = !config->ATTR; \
}

_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
COPY_FLAG(isolated, Py_IsolatedFlag);
COPY_NOT_FLAG(use_environment, Py_IgnoreEnvironmentFlag);
#ifdef MS_WINDOWS
COPY_FLAG(legacy_windows_fs_encoding, Py_LegacyWindowsFSEncodingFlag);
#endif
COPY_FLAG(utf8_mode, Py_UTF8Mode);
_Py_COMP_DIAG_POP

#undef COPY_FLAG
#undef COPY_NOT_FLAG
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