#1535: rename __builtin__ module to builtins.
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
index e26c350..14e1bfb 100644
--- a/Objects/exceptions.c
+++ b/Objects/exceptions.c
@@ -1849,7 +1849,7 @@
     PRE_INIT(UnicodeWarning)
     PRE_INIT(BytesWarning)
 
-    bltinmod = PyImport_ImportModule("__builtin__");
+    bltinmod = PyImport_ImportModule("builtins");
     if (bltinmod == NULL)
         Py_FatalError("exceptions bootstrapping error.");
     bdict = PyModule_GetDict(bltinmod);
diff --git a/Objects/listobject.c b/Objects/listobject.c
index ea10abf..01ada08 100644
--- a/Objects/listobject.c
+++ b/Objects/listobject.c
@@ -1961,7 +1961,7 @@
 	module = PyUnicode_AsString(f->m_module);
 	if (module == NULL)
 		return 0;
-	if (strcmp(module, "__builtin__") != 0)
+	if (strcmp(module, "builtins") != 0)
 		return 0;
 	if (strcmp(f->m_ml->ml_name, "cmp") != 0)
 		return 0;
diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index fd6f5ce..99ba799 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -112,7 +112,7 @@
 		if (s != NULL)
 			return PyUnicode_FromStringAndSize(
 			    type->tp_name, (Py_ssize_t)(s - type->tp_name));
-		return PyUnicode_FromString("__builtin__");
+		return PyUnicode_FromString("builtins");
 	}
 }
 
@@ -397,7 +397,7 @@
 	else
 		kind = "type";
 
-	if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "__builtin__"))
+	if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "builtins"))
 		rtn = PyUnicode_FromFormat("<%s '%U.%U'>", kind, mod, name);
 	else
 		rtn = PyUnicode_FromFormat("<%s '%s'>", kind, type->tp_name);
@@ -2455,7 +2455,7 @@
 	name = type_name(type, NULL);
 	if (name == NULL)
 		return NULL;
-	if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "__builtin__"))
+	if (mod != NULL && PyUnicode_CompareWithASCIIString(mod, "builtins"))
 		rtn = PyUnicode_FromFormat("<%U.%U object at %p>", mod, name, self);
 	else
 		rtn = PyUnicode_FromFormat("<%s object at %p>",