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Implementation of PEP-0217.

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This closes the PEP, and patch 103170
This commit is contained in:
Moshe Zadka 2001-01-11 05:41:27 +00:00
parent 5ac97957f7
commit f68f2fec7d
3 changed files with 72 additions and 27 deletions
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46
Python/sysmodule.c
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@ -67,6 +67,50 @@ PySys_SetObject(char *name, PyObject *v)
return PyDict_SetItemString(sd, name, v);
}
static PyObject *
sys_displayhook(PyObject *self, PyObject *args)
{
PyObject *o, *stdout;
PyInterpreterState *interp = PyThreadState_Get()->interp;
PyObject *modules = interp->modules;
PyObject *builtins = PyDict_GetItemString(modules, "__builtin__");
/* parse arguments */
if (!PyArg_ParseTuple(args, "O:displayhook", &o))
return NULL;
/* Print value except if None */
/* After printing, also assign to '_' */
/* Before, set '_' to None to avoid recursion */
if (o == Py_None) {
Py_INCREF(Py_None);
return Py_None;
}
if (PyObject_SetAttrString(builtins, "_", Py_None) != 0)
return NULL;
if (Py_FlushLine() != 0)
return NULL;
stdout = PySys_GetObject("stdout");
if (stdout == NULL) {
PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout");
return NULL;
}
if (PyFile_WriteObject(o, stdout, 0) != 0)
return NULL;
PyFile_SoftSpace(stdout, 1);
if (Py_FlushLine() != 0)
return NULL;
if (PyObject_SetAttrString(builtins, "_", o) != 0)
return NULL;
Py_INCREF(Py_None);
return Py_None;
}
static char displayhook_doc[] =
"displayhook(o) -> None\n"
"\n"
"Print o to the stdout, and save it in __builtin__._\n";
static PyObject *
sys_exc_info(PyObject *self, PyObject *args)
{
@ -332,6 +376,7 @@ extern PyObject *_Py_GetDXProfile(PyObject *, PyObject *);
static PyMethodDef sys_methods[] = {
/* Might as well keep this in alphabetic order */
{"displayhook", sys_displayhook, 1, displayhook_doc},
{"exc_info", sys_exc_info, 1, exc_info_doc},
{"exit", sys_exit, 0, exit_doc},
{"getdefaultencoding", sys_getdefaultencoding, 1,
@ -475,6 +520,7 @@ __stderr__ -- the original stderr; don't use!\n\
\n\
Functions:\n\
\n\
displayhook() -- print an object to the screen, and save it in __builtin__._\n\
exc_info() -- return thread-safe information about the current exception\n\
exit() -- exit the interpreter by raising SystemExit\n\
getrefcount() -- return the reference count for an object (plus one :-)\n\