Eric Snow's implementation of PEP 421.
Issue 14673: Add sys.implementation
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 57f880e..096e51e 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -1261,6 +1261,7 @@
float_info -- a struct sequence with information about the float implementation.\n\
float_repr_style -- string indicating the style of repr() output for floats\n\
hexversion -- version information encoded as a single integer\n\
+implementation -- Python implementation information.\n\
int_info -- a struct sequence with information about the int implementation.\n\
maxsize -- the largest supported length of containers.\n\
maxunicode -- the value of the largest Unicode codepoint\n\
@@ -1454,6 +1455,69 @@
return version_info;
}
+static PyObject *
+make_impl_info(PyObject *version_info)
+{
+ int res;
+ PyObject *impl_info, *value, *ns;
+
+ impl_info = PyDict_New();
+ if (impl_info == NULL)
+ return NULL;
+
+ /* populate the dict */
+
+#define NAME "cpython"
+#define QUOTE(arg) #arg
+#define STRIFY(name) QUOTE(name)
+#define MAJOR STRIFY(PY_MAJOR_VERSION)
+#define MINOR STRIFY(PY_MINOR_VERSION)
+#define TAG NAME "-" MAJOR MINOR
+ value = PyUnicode_FromString(NAME);
+ if (value == NULL)
+ goto error;
+ res = PyDict_SetItemString(impl_info, "name", value);
+ Py_DECREF(value);
+ if (res < 0)
+ goto error;
+
+ value = PyUnicode_FromString(TAG);
+ if (value == NULL)
+ goto error;
+ res = PyDict_SetItemString(impl_info, "cache_tag", value);
+ Py_DECREF(value);
+ if (res < 0)
+ goto error;
+#undef NAME
+#undef QUOTE
+#undef STRIFY
+#undef MAJOR
+#undef MINOR
+#undef TAG
+
+ res = PyDict_SetItemString(impl_info, "version", version_info);
+ if (res < 0)
+ goto error;
+
+ value = PyLong_FromLong(PY_VERSION_HEX);
+ if (value == NULL)
+ goto error;
+ res = PyDict_SetItemString(impl_info, "hexversion", value);
+ Py_DECREF(value);
+ if (res < 0)
+ goto error;
+
+ /* dict ready */
+
+ ns = _PyNamespace_New(impl_info);
+ Py_DECREF(impl_info);
+ return ns;
+
+error:
+ Py_CLEAR(impl_info);
+ return NULL;
+}
+
static struct PyModuleDef sysmodule = {
PyModuleDef_HEAD_INIT,
"sys",
@@ -1469,7 +1533,7 @@
PyObject *
_PySys_Init(void)
{
- PyObject *m, *v, *sysdict;
+ PyObject *m, *v, *sysdict, *version_info;
char *s;
m = PyModule_Create(&sysmodule);
@@ -1589,11 +1653,15 @@
/* version_info */
if (VersionInfoType.tp_name == 0)
PyStructSequence_InitType(&VersionInfoType, &version_info_desc);
- SET_SYS_FROM_STRING("version_info", make_version_info());
+ version_info = make_version_info();
+ SET_SYS_FROM_STRING("version_info", version_info);
/* prevent user from creating new instances */
VersionInfoType.tp_init = NULL;
VersionInfoType.tp_new = NULL;
+ /* implementation */
+ SET_SYS_FROM_STRING("implementation", make_impl_info(version_info));
+
/* flags */
if (FlagsType.tp_name == 0)
PyStructSequence_InitType(&FlagsType, &flags_desc);