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bpo-42955: Add sys.modules_names (GH-24238)

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Add sys.module_names, containing the list of the standard library
module names.
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Victor Stinner 2021-01-25 13:24:42 +01:00 • committed by GitHub
parent 879986d8a9
commit db584bdad3
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 305 additions and 275 deletions
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64
Python/sysmodule.c
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@ -29,6 +29,7 @@ Data members:
#include "frameobject.h" // PyFrame_GetBack()
#include "pydtrace.h"
#include "osdefs.h" // DELIM
#include "module_names.h" // _Py_module_names
#include <locale.h>
#ifdef MS_WINDOWS
@ -2020,33 +2021,63 @@ static PyMethodDef sys_methods[] = {
{NULL, NULL} /* sentinel */
};
static PyObject *
list_builtin_module_names(void)
{
PyObject *list = PyList_New(0);
int i;
if (list == NULL)
if (list == NULL) {
return NULL;
for (i = 0; PyImport_Inittab[i].name != NULL; i++) {
PyObject *name = PyUnicode_FromString(
PyImport_Inittab[i].name);
if (name == NULL)
break;
PyList_Append(list, name);
}
for (Py_ssize_t i = 0; PyImport_Inittab[i].name != NULL; i++) {
PyObject *name = PyUnicode_FromString(PyImport_Inittab[i].name);
if (name == NULL) {
goto error;
}
if (PyList_Append(list, name) < 0) {
Py_DECREF(name);
goto error;
}
Py_DECREF(name);
}
if (PyList_Sort(list) != 0) {
Py_DECREF(list);
list = NULL;
goto error;
}
if (list) {
PyObject *v = PyList_AsTuple(list);
Py_DECREF(list);
list = v;
}
return list;
PyObject *tuple = PyList_AsTuple(list);
Py_DECREF(list);
return tuple;
error:
Py_DECREF(list);
return NULL;
}
static PyObject *
list_module_names(void)
{
Py_ssize_t len = Py_ARRAY_LENGTH(_Py_module_names);
PyObject *names = PyTuple_New(len);
if (names == NULL) {
return NULL;
}
for (Py_ssize_t i = 0; i < len; i++) {
PyObject *name = PyUnicode_FromString(_Py_module_names[i]);
if (name == NULL) {
Py_DECREF(names);
return NULL;
}
PyTuple_SET_ITEM(names, i, name);
}
PyObject *set = PyObject_CallFunction((PyObject *)&PyFrozenSet_Type,
"(O)", names);
Py_DECREF(names);
return set;
}
/* Pre-initialization support for sys.warnoptions and sys._xoptions
*
* Modern internal code paths:
@ -2753,6 +2784,7 @@ _PySys_InitCore(PyThreadState *tstate, PyObject *sysdict)
SET_SYS("hash_info", get_hash_info(tstate));
SET_SYS("maxunicode", PyLong_FromLong(0x10FFFF));
SET_SYS("builtin_module_names", list_builtin_module_names());
SET_SYS("module_names", list_module_names());
#if PY_BIG_ENDIAN
SET_SYS_FROM_STRING("byteorder", "big");
#else