diff --git a/Objects/bytearrayobject.c b/Objects/bytearrayobject.c
index ac67d0b..7448354 100644
--- a/Objects/bytearrayobject.c
+++ b/Objects/bytearrayobject.c
@@ -2488,75 +2488,6 @@
     return PyUnicode_FromEncodedObject(self, encoding, errors);
 }
 
-PyDoc_STRVAR(transform__doc__,
-"B.transform(encoding, errors='strict') -> bytearray\n\
-\n\
-Transform B using the codec registered for encoding. errors may be given\n\
-to set a different error handling scheme.");
-
-static PyObject *
-bytearray_transform(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    const char *encoding = NULL;
-    const char *errors = NULL;
-    static char *kwlist[] = {"encoding", "errors", 0};
-    PyObject *v, *w;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|s:transform",
-                                     kwlist, &encoding, &errors))
-        return NULL;
-
-    v = PyCodec_Encode(self, encoding, errors);
-    if (v == NULL)
-        return NULL;
-    if (!PyBytes_Check(v)) {
-        PyErr_Format(PyExc_TypeError,
-                     "encoder did not return a bytes object (type=%.400s)",
-                     Py_TYPE(v)->tp_name);
-        Py_DECREF(v);
-        return NULL;
-    }
-    w = PyByteArray_FromStringAndSize(PyBytes_AS_STRING(v),
-                                      PyBytes_GET_SIZE(v));
-    Py_DECREF(v);
-    return w;
-}
-
-
-PyDoc_STRVAR(untransform__doc__,
-"B.untransform(encoding, errors='strict') -> bytearray\n\
-\n\
-Reverse-transform B using the codec registered for encoding. errors may\n\
-be given to set a different error handling scheme.");
-
-static PyObject *
-bytearray_untransform(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    const char *encoding = NULL;
-    const char *errors = NULL;
-    static char *kwlist[] = {"encoding", "errors", 0};
-    PyObject *v, *w;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|s:untransform",
-                                     kwlist, &encoding, &errors))
-        return NULL;
-
-    v = PyCodec_Decode(self, encoding, errors);
-    if (v == NULL)
-        return NULL;
-    if (!PyBytes_Check(v)) {
-        PyErr_Format(PyExc_TypeError,
-                     "decoder did not return a bytes object (type=%.400s)",
-                     Py_TYPE(v)->tp_name);
-        Py_DECREF(v);
-        return NULL;
-    }
-    w = PyByteArray_FromStringAndSize(PyBytes_AS_STRING(v),
-                                      PyBytes_GET_SIZE(v));
-    Py_DECREF(v);
-    return w;
-}
-
 PyDoc_STRVAR(alloc_doc,
 "B.__alloc__() -> int\n\
 \n\
@@ -2851,12 +2782,8 @@
     {"swapcase", (PyCFunction)stringlib_swapcase, METH_NOARGS,
      _Py_swapcase__doc__},
     {"title", (PyCFunction)stringlib_title, METH_NOARGS, _Py_title__doc__},
-    {"transform", (PyCFunction)bytearray_transform, METH_VARARGS | METH_KEYWORDS,
-     transform__doc__},
     {"translate", (PyCFunction)bytearray_translate, METH_VARARGS,
      translate__doc__},
-    {"untransform", (PyCFunction)bytearray_untransform, METH_VARARGS | METH_KEYWORDS,
-     untransform__doc__},
     {"upper", (PyCFunction)stringlib_upper, METH_NOARGS, _Py_upper__doc__},
     {"zfill", (PyCFunction)stringlib_zfill, METH_VARARGS, zfill__doc__},
     {NULL}
diff --git a/Objects/bytesobject.c b/Objects/bytesobject.c
index 4aa0748..ba33608 100644
--- a/Objects/bytesobject.c
+++ b/Objects/bytesobject.c
@@ -2312,68 +2312,6 @@
     return PyUnicode_FromEncodedObject(self, encoding, errors);
 }
 
-PyDoc_STRVAR(transform__doc__,
-"B.transform(encoding, errors='strict') -> bytes\n\
-\n\
-Transform B using the codec registered for encoding. errors may be given\n\
-to set a different error handling scheme.");
-
-static PyObject *
-bytes_transform(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    const char *encoding = NULL;
-    const char *errors = NULL;
-    static char *kwlist[] = {"encoding", "errors", 0};
-    PyObject *v;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|s:transform",
-                                     kwlist, &encoding, &errors))
-        return NULL;
-
-    v = PyCodec_Encode(self, encoding, errors);
-    if (v == NULL)
-        return NULL;
-    if (!PyBytes_Check(v)) {
-        PyErr_Format(PyExc_TypeError,
-                     "encoder did not return a bytes object (type=%.400s)",
-                     Py_TYPE(v)->tp_name);
-        Py_DECREF(v);
-        return NULL;
-    }
-    return v;
-}
-
-
-PyDoc_STRVAR(untransform__doc__,
-"B.untransform(encoding, errors='strict') -> bytes\n\
-\n\
-Reverse-transform B using the codec registered for encoding. errors may\n\
-be given to set a different error handling scheme.");
-
-static PyObject *
-bytes_untransform(PyObject *self, PyObject *args, PyObject *kwargs)
-{
-    const char *encoding = NULL;
-    const char *errors = NULL;
-    static char *kwlist[] = {"encoding", "errors", 0};
-    PyObject *v;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|s:untransform",
-                                     kwlist, &encoding, &errors))
-        return NULL;
-
-    v = PyCodec_Decode(self, encoding, errors);
-    if (v == NULL)
-        return NULL;
-    if (!PyBytes_Check(v)) {
-        PyErr_Format(PyExc_TypeError,
-                     "decoder did not return a bytes object (type=%.400s)",
-                     Py_TYPE(v)->tp_name);
-        Py_DECREF(v);
-        return NULL;
-    }
-    return v;
-}
 
 PyDoc_STRVAR(splitlines__doc__,
 "B.splitlines([keepends]) -> list of lines\n\
@@ -2537,10 +2475,8 @@
     {"swapcase", (PyCFunction)stringlib_swapcase, METH_NOARGS,
      _Py_swapcase__doc__},
     {"title", (PyCFunction)stringlib_title, METH_NOARGS, _Py_title__doc__},
-    {"transform", (PyCFunction)bytes_transform, METH_VARARGS | METH_KEYWORDS, transform__doc__},
     {"translate", (PyCFunction)bytes_translate, METH_VARARGS,
      translate__doc__},
-    {"untransform", (PyCFunction)bytes_untransform, METH_VARARGS | METH_KEYWORDS, untransform__doc__},
     {"upper", (PyCFunction)stringlib_upper, METH_NOARGS, _Py_upper__doc__},
     {"zfill", (PyCFunction)stringlib_zfill, METH_VARARGS, zfill__doc__},
     {"__sizeof__", (PyCFunction)bytes_sizeof, METH_NOARGS,
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index 751da30..9f109f3 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -7455,44 +7455,6 @@
     return PyUnicode_AsEncodedString((PyObject *)self, encoding, errors);
 }
 
-PyDoc_STRVAR(transform__doc__,
-             "S.transform(encoding, errors='strict') -> str\n\
-\n\
-Transform S using the codec registered for encoding. errors may be given\n\
-to set a different error handling scheme.");
-
-static PyObject *
-unicode_transform(PyUnicodeObject *self, PyObject *args, PyObject *kwargs)
-{
-    static char *kwlist[] = {"encoding", "errors", 0};
-    char *encoding = NULL;
-    char *errors = NULL;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|s:transform",
-                                     kwlist, &encoding, &errors))
-        return NULL;
-    return PyUnicode_AsEncodedUnicode((PyObject *)self, encoding, errors);
-}
-
-PyDoc_STRVAR(untransform__doc__,
-             "S.untransform(encoding, errors='strict') -> str\n\
-\n\
-Reverse-transform S using the codec registered for encoding. errors may be\n\
-given to set a different error handling scheme.");
-
-static PyObject *
-unicode_untransform(PyUnicodeObject *self, PyObject *args, PyObject *kwargs)
-{
-    static char *kwlist[] = {"encoding", "errors", 0};
-    char *encoding = NULL;
-    char *errors = NULL;
-
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|s:untransform",
-                                     kwlist, &encoding, &errors))
-        return NULL;
-    return PyUnicode_AsDecodedUnicode((PyObject *)self, encoding, errors);
-}
-
 PyDoc_STRVAR(expandtabs__doc__,
              "S.expandtabs([tabsize]) -> str\n\
 \n\
@@ -9144,8 +9106,7 @@
     /* Order is according to common usage: often used methods should
        appear first, since lookup is done sequentially. */
 
-    {"encode", (PyCFunction) unicode_encode, METH_VARARGS | METH_KEYWORDS,
-     encode__doc__},
+    {"encode", (PyCFunction) unicode_encode, METH_VARARGS | METH_KEYWORDS, encode__doc__},
     {"replace", (PyCFunction) unicode_replace, METH_VARARGS, replace__doc__},
     {"split", (PyCFunction) unicode_split, METH_VARARGS, split__doc__},
     {"rsplit", (PyCFunction) unicode_rsplit, METH_VARARGS, rsplit__doc__},
@@ -9190,10 +9151,6 @@
     {"__format__", (PyCFunction) unicode__format__, METH_VARARGS, p_format__doc__},
     {"maketrans", (PyCFunction) unicode_maketrans,
      METH_VARARGS | METH_STATIC, maketrans__doc__},
-    {"transform", (PyCFunction) unicode_transform, METH_VARARGS | METH_KEYWORDS,
-     transform__doc__},
-    {"untransform", (PyCFunction) unicode_untransform, METH_VARARGS | METH_KEYWORDS,
-     untransform__doc__},
     {"__sizeof__", (PyCFunction) unicode__sizeof__, METH_NOARGS, sizeof__doc__},
 #if 0
     {"capwords", (PyCFunction) unicode_capwords, METH_NOARGS, capwords__doc__},