diff --git a/Include/object.h b/Include/object.h
index ef45838..a36c5be 100644
--- a/Include/object.h
+++ b/Include/object.h
@@ -143,9 +143,17 @@
     PyObject *object;
 } _Py_Identifier;
 
-#define _Py_static_string(varname, value)  static _Py_Identifier varname = { 0, value, 0 }
+#define _Py_static_string_init(value) { 0, value, 0 }
+#define _Py_static_string(varname, value)  static _Py_Identifier varname = _Py_static_string_init(value)
 #define _Py_IDENTIFIER(varname) _Py_static_string(PyId_##varname, #varname)
 
+/* Common identifiers */
+PyAPI_DATA(_Py_Identifier) _PyId_path;
+PyAPI_DATA(_Py_Identifier) _PyId_argv;
+PyAPI_DATA(_Py_Identifier) _PyId_stdin;
+PyAPI_DATA(_Py_Identifier) _PyId_stdout;
+PyAPI_DATA(_Py_Identifier) _PyId_stderr;
+
 /*
 Type objects contain a string containing the type name (to help somewhat
 in debugging), the allocation parameters (see PyObject_New() and
@@ -829,7 +837,7 @@
         PyObject *_py_xincref_tmp = (PyObject *)(op); \
         if (_py_xincref_tmp != NULL)                  \
             Py_INCREF(_py_xincref_tmp);               \
-    } while (0)                                    
+    } while (0)
 
 #define Py_XDECREF(op)                                \
     do {                                              \
diff --git a/Modules/_ctypes/callbacks.c b/Modules/_ctypes/callbacks.c
index ec8fd12..756f4ef 100644
--- a/Modules/_ctypes/callbacks.c
+++ b/Modules/_ctypes/callbacks.c
@@ -80,7 +80,7 @@
 PrintError(char *msg, ...)
 {
     char buf[512];
-    PyObject *f = PySys_GetObject("stderr");
+    PyObject *f = _PySys_GetObjectId(&_PyId_stderr);
     va_list marker;
 
     va_start(marker, msg);
diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 1f192dc..5cdd926 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -2578,7 +2578,7 @@
     if (fd == -1) {
         PyObject* sys_stdout;
 
-        sys_stdout = PySys_GetObject("stdout");
+        sys_stdout = _PySys_GetObjectId(&_PyId_stdout);
 
         if (sys_stdout == NULL || sys_stdout == Py_None) {
             PyErr_SetString(
diff --git a/Modules/_threadmodule.c b/Modules/_threadmodule.c
index 32656c9..a7123b7 100644
--- a/Modules/_threadmodule.c
+++ b/Modules/_threadmodule.c
@@ -1005,7 +1005,7 @@
             PySys_WriteStderr(
                 "Unhandled exception in thread started by ");
             PyErr_Fetch(&exc, &value, &tb);
-            file = PySys_GetObject("stderr");
+            file = _PySys_GetObjectId(&_PyId_stderr);
             if (file != NULL && file != Py_None)
                 PyFile_WriteObject(boot->func, file, 0);
             else
diff --git a/Modules/faulthandler.c b/Modules/faulthandler.c
index 47bc9e8..315b32d 100644
--- a/Modules/faulthandler.c
+++ b/Modules/faulthandler.c
@@ -136,7 +136,7 @@
     int fd;
 
     if (file == NULL || file == Py_None) {
-        file = PySys_GetObject("stderr");
+        file = _PySys_GetObjectId(&_PyId_stderr);
         if (file == NULL) {
             PyErr_SetString(PyExc_RuntimeError, "unable to get sys.stderr");
             return NULL;
diff --git a/Modules/main.c b/Modules/main.c
index 9171070..4b1a968 100644
--- a/Modules/main.c
+++ b/Modules/main.c
@@ -261,7 +261,7 @@
 
     /* argv0 is usable as an import source, so put it in sys.path[0]
        and import __main__ */
-    sys_path = PySys_GetObject("path");
+    sys_path = _PySys_GetObjectId(&_PyId_path);
     if (sys_path == NULL) {
         PyErr_SetString(PyExc_RuntimeError, "unable to get sys.path");
         goto error;
diff --git a/Modules/syslogmodule.c b/Modules/syslogmodule.c
index 9d79eec..edd12ab 100644
--- a/Modules/syslogmodule.c
+++ b/Modules/syslogmodule.c
@@ -71,7 +71,7 @@
     Py_ssize_t argv_len, scriptlen;
     PyObject *scriptobj;
     Py_ssize_t slash;
-    PyObject *argv = PySys_GetObject("argv");
+    PyObject *argv = _PySys_GetObjectId(&_PyId_argv);
 
     if (argv == NULL) {
         return(NULL);
diff --git a/Python/_warnings.c b/Python/_warnings.c
index e88f646..de60128 100644
--- a/Python/_warnings.c
+++ b/Python/_warnings.c
@@ -265,7 +265,7 @@
     if (name == NULL)  /* XXX Can an object lack a '__name__' attribute? */
         goto error;
 
-    f_stderr = PySys_GetObject("stderr");
+    f_stderr = _PySys_GetObjectId(&_PyId_stderr);
     if (f_stderr == NULL) {
         fprintf(stderr, "lost sys.stderr\n");
         goto error;
@@ -562,7 +562,7 @@
     else {
         *filename = NULL;
         if (*module != Py_None && PyUnicode_CompareWithASCIIString(*module, "__main__") == 0) {
-            PyObject *argv = PySys_GetObject("argv");
+            PyObject *argv = _PySys_GetObjectId(&_PyId_argv);
             /* PyList_Check() is needed because sys.argv is set to None during
                Python finalization */
             if (argv != NULL && PyList_Check(argv) && PyList_Size(argv) > 0) {
diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 6069e41..6eb0ee7 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1553,7 +1553,7 @@
                                      kwlist, &sep, &end, &file, &flush))
         return NULL;
     if (file == NULL || file == Py_None) {
-        file = PySys_GetObject("stdout");
+        file = _PySys_GetObjectId(&_PyId_stdout);
         if (file == NULL) {
             PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout");
             return NULL;
@@ -1638,9 +1638,9 @@
 builtin_input(PyObject *self, PyObject *args)
 {
     PyObject *promptarg = NULL;
-    PyObject *fin = PySys_GetObject("stdin");
-    PyObject *fout = PySys_GetObject("stdout");
-    PyObject *ferr = PySys_GetObject("stderr");
+    PyObject *fin = _PySys_GetObjectId(&_PyId_stdin);
+    PyObject *fout = _PySys_GetObjectId(&_PyId_stdout);
+    PyObject *ferr = _PySys_GetObjectId(&_PyId_stderr);
     PyObject *tmp;
     long fd;
     int tty;
diff --git a/Python/errors.c b/Python/errors.c
index 1832b5b..b92911a 100644
--- a/Python/errors.c
+++ b/Python/errors.c
@@ -844,7 +844,7 @@
 
     PyErr_Fetch(&t, &v, &tb);
 
-    f = PySys_GetObject("stderr");
+    f = _PySys_GetObjectId(&_PyId_stderr);
     if (f == NULL || f == Py_None)
         goto done;
 
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index 61d0352..e510e6f 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -35,6 +35,21 @@
 #define PATH_MAX MAXPATHLEN
 #endif
 
+/* Common identifiers */
+_Py_Identifier _PyId_argv = _Py_static_string_init("argv");
+_Py_Identifier _PyId_path = _Py_static_string_init("path");
+_Py_Identifier _PyId_stdin = _Py_static_string_init("stdin");
+_Py_Identifier _PyId_stdout = _Py_static_string_init("stdout");
+_Py_Identifier _PyId_stderr = _Py_static_string_init("stderr");
+
+/* local identifiers */
+_Py_IDENTIFIER(excepthook);
+_Py_IDENTIFIER(ps1);
+_Py_IDENTIFIER(ps2);
+_Py_IDENTIFIER(last_type);
+_Py_IDENTIFIER(last_value);
+_Py_IDENTIFIER(last_traceback);
+
 #ifdef Py_REF_DEBUG
 static
 void _print_total_refs(void) {
@@ -412,7 +427,7 @@
     pstderr = PyFile_NewStdPrinter(fileno(stderr));
     if (pstderr == NULL)
         Py_FatalError("Py_Initialize: can't set preliminary stderr");
-    PySys_SetObject("stderr", pstderr);
+    _PySys_SetObjectId(&_PyId_stderr, pstderr);
     PySys_SetObject("__stderr__", pstderr);
     Py_DECREF(pstderr);
 
@@ -497,8 +512,8 @@
 static void
 flush_std_files(void)
 {
-    PyObject *fout = PySys_GetObject("stdout");
-    PyObject *ferr = PySys_GetObject("stderr");
+    PyObject *fout = _PySys_GetObjectId(&_PyId_stdout);
+    PyObject *ferr = _PySys_GetObjectId(&_PyId_stderr);
     PyObject *tmp;
     _Py_IDENTIFIER(flush);
 
@@ -776,7 +791,7 @@
         pstderr = PyFile_NewStdPrinter(fileno(stderr));
         if (pstderr == NULL)
             Py_FatalError("Py_Initialize: can't set preliminary stderr");
-        PySys_SetObject("stderr", pstderr);
+        _PySys_SetObjectId(&_PyId_stderr, pstderr);
         PySys_SetObject("__stderr__", pstderr);
         Py_DECREF(pstderr);
 
@@ -1170,7 +1185,7 @@
             goto error;
     } /* if (fd < 0) */
     PySys_SetObject("__stdin__", std);
-    PySys_SetObject("stdin", std);
+    _PySys_SetObjectId(&_PyId_stdin, std);
     Py_DECREF(std);
 
     /* Set sys.stdout */
@@ -1185,7 +1200,7 @@
             goto error;
     } /* if (fd < 0) */
     PySys_SetObject("__stdout__", std);
-    PySys_SetObject("stdout", std);
+    _PySys_SetObjectId(&_PyId_stdout, std);
     Py_DECREF(std);
 
 #if 1 /* Disable this if you have trouble debugging bootstrap stuff */
@@ -1219,7 +1234,7 @@
         Py_DECREF(std);
         goto error;
     }
-    if (PySys_SetObject("stderr", std) < 0) {
+    if (_PySys_SetObjectId(&_PyId_stderr, std) < 0) {
         Py_DECREF(std);
         goto error;
     }
@@ -1281,14 +1296,14 @@
         flags = &local_flags;
         local_flags.cf_flags = 0;
     }
-    v = PySys_GetObject("ps1");
+    v = _PySys_GetObjectId(&PyId_ps1);
     if (v == NULL) {
-        PySys_SetObject("ps1", v = PyUnicode_FromString(">>> "));
+        _PySys_SetObjectId(&PyId_ps1, v = PyUnicode_FromString(">>> "));
         Py_XDECREF(v);
     }
-    v = PySys_GetObject("ps2");
+    v = _PySys_GetObjectId(&PyId_ps2);
     if (v == NULL) {
-        PySys_SetObject("ps2", v = PyUnicode_FromString("... "));
+        _PySys_SetObjectId(&PyId_ps2, v = PyUnicode_FromString("... "));
         Py_XDECREF(v);
     }
     err = -1;
@@ -1351,7 +1366,7 @@
 
     if (fp == stdin) {
         /* Fetch encoding from sys.stdin if possible. */
-        v = PySys_GetObject("stdin");
+        v = _PySys_GetObjectId(&_PyId_stdin);
         if (v && v != Py_None) {
             oenc = _PyObject_GetAttrId(v, &PyId_encoding);
             if (oenc)
@@ -1360,7 +1375,7 @@
                 PyErr_Clear();
         }
     }
-    v = PySys_GetObject("ps1");
+    v = _PySys_GetObjectId(&PyId_ps1);
     if (v != NULL) {
         v = PyObject_Str(v);
         if (v == NULL)
@@ -1373,7 +1388,7 @@
             }
         }
     }
-    w = PySys_GetObject("ps2");
+    w = _PySys_GetObjectId(&PyId_ps2);
     if (w != NULL) {
         w = PyObject_Str(w);
         if (w == NULL)
@@ -1752,7 +1767,7 @@
     if (PyLong_Check(value))
         exitcode = (int)PyLong_AsLong(value);
     else {
-        PyObject *sys_stderr = PySys_GetObject("stderr");
+        PyObject *sys_stderr = _PySys_GetObjectId(&_PyId_stderr);
         if (sys_stderr != NULL && sys_stderr != Py_None) {
             PyFile_WriteObject(value, sys_stderr, Py_PRINT_RAW);
         } else {
@@ -1795,11 +1810,11 @@
         return;
     /* Now we know v != NULL too */
     if (set_sys_last_vars) {
-        PySys_SetObject("last_type", exception);
-        PySys_SetObject("last_value", v);
-        PySys_SetObject("last_traceback", tb);
+        _PySys_SetObjectId(&PyId_last_type, exception);
+        _PySys_SetObjectId(&PyId_last_value, v);
+        _PySys_SetObjectId(&PyId_last_traceback, tb);
     }
-    hook = PySys_GetObject("excepthook");
+    hook = _PySys_GetObjectId(&PyId_excepthook);
     if (hook) {
         PyObject *args = PyTuple_Pack(3, exception, v, tb);
         PyObject *result = PyEval_CallObject(hook, args);
@@ -2009,7 +2024,7 @@
 PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb)
 {
     PyObject *seen;
-    PyObject *f = PySys_GetObject("stderr");
+    PyObject *f = _PySys_GetObjectId(&_PyId_stderr);
     if (PyExceptionInstance_Check(value)
         && tb != NULL && PyTraceBack_Check(tb)) {
         /* Put the traceback on the exception, otherwise it won't get
@@ -2107,7 +2122,7 @@
     /* Save the current exception */
     PyErr_Fetch(&type, &value, &traceback);
 
-    f = PySys_GetObject("stderr");
+    f = _PySys_GetObjectId(&_PyId_stderr);
     if (f != NULL) {
         r = _PyObject_CallMethodId(f, &PyId_flush, "");
         if (r)
@@ -2115,7 +2130,7 @@
         else
             PyErr_Clear();
     }
-    f = PySys_GetObject("stdout");
+    f = _PySys_GetObjectId(&_PyId_stdout);
     if (f != NULL) {
         r = _PyObject_CallMethodId(f, &PyId_flush, "");
         if (r)
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 32136e8..de33d55 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -183,7 +183,7 @@
     }
     if (_PyObject_SetAttrId(builtins, &PyId__, Py_None) != 0)
         return NULL;
-    outf = PySys_GetObject("stdout");
+    outf = _PySys_GetObjectId(&_PyId_stdout);
     if (outf == NULL || outf == Py_None) {
         PyErr_SetString(PyExc_RuntimeError, "lost sys.stdout");
         return NULL;
@@ -1825,7 +1825,7 @@
     PyObject *v;
     if ((v = makepathobject(path, DELIM)) == NULL)
         Py_FatalError("can't create sys.path");
-    if (PySys_SetObject("path", v) != 0)
+    if (_PySys_SetObjectId(&_PyId_path, v) != 0)
         Py_FatalError("can't assign sys.path");
     Py_DECREF(v);
 }
@@ -1894,7 +1894,7 @@
     wchar_t fullpath[MAX_PATH];
 #endif
 
-    path = PySys_GetObject("path");
+    path = _PySys_GetObjectId(&_PyId_path);
     if (path == NULL)
         return;
 
@@ -2081,7 +2081,7 @@
  */
 
 static void
-sys_write(char *name, FILE *fp, const char *format, va_list va)
+sys_write(_Py_Identifier *key, FILE *fp, const char *format, va_list va)
 {
     PyObject *file;
     PyObject *error_type, *error_value, *error_traceback;
@@ -2089,7 +2089,7 @@
     int written;
 
     PyErr_Fetch(&error_type, &error_value, &error_traceback);
-    file = PySys_GetObject(name);
+    file = _PySys_GetObjectId(key);
     written = PyOS_vsnprintf(buffer, sizeof(buffer), format, va);
     if (sys_pyfile_write(buffer, file) != 0) {
         PyErr_Clear();
@@ -2109,7 +2109,7 @@
     va_list va;
 
     va_start(va, format);
-    sys_write("stdout", stdout, format, va);
+    sys_write(&_PyId_stdout, stdout, format, va);
     va_end(va);
 }
 
@@ -2119,19 +2119,19 @@
     va_list va;
 
     va_start(va, format);
-    sys_write("stderr", stderr, format, va);
+    sys_write(&_PyId_stderr, stderr, format, va);
     va_end(va);
 }
 
 static void
-sys_format(char *name, FILE *fp, const char *format, va_list va)
+sys_format(_Py_Identifier *key, FILE *fp, const char *format, va_list va)
 {
     PyObject *file, *message;
     PyObject *error_type, *error_value, *error_traceback;
     char *utf8;
 
     PyErr_Fetch(&error_type, &error_value, &error_traceback);
-    file = PySys_GetObject(name);
+    file = _PySys_GetObjectId(key);
     message = PyUnicode_FromFormatV(format, va);
     if (message != NULL) {
         if (sys_pyfile_write_unicode(message, file) != 0) {
@@ -2151,7 +2151,7 @@
     va_list va;
 
     va_start(va, format);
-    sys_format("stdout", stdout, format, va);
+    sys_format(&_PyId_stdout, stdout, format, va);
     va_end(va);
 }
 
@@ -2161,6 +2161,6 @@
     va_list va;
 
     va_start(va, format);
-    sys_format("stderr", stderr, format, va);
+    sys_format(&_PyId_stderr, stderr, format, va);
     va_end(va);
 }
diff --git a/Python/traceback.c b/Python/traceback.c
index 01e9473..b0bed5f 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -169,7 +169,7 @@
         tail++;
     taillen = strlen(tail);
 
-    syspath = PySys_GetObject("path");
+    syspath = _PySys_GetObjectId(&_PyId_path);
     if (syspath == NULL || !PyList_Check(syspath))
         goto error;
     npath = PyList_Size(syspath);