diff --git a/Modules/_elementtree.c b/Modules/_elementtree.c
index 5d63913b0a0..2d623dc2620 100644
--- a/Modules/_elementtree.c
+++ b/Modules/_elementtree.c
@@ -2743,7 +2743,7 @@ typedef struct {
 } XMLParserObject;
 
 static PyObject*
-_elementtree_XMLParser_doctype(XMLParserObject* self, PyObject* args);
+_elementtree_XMLParser_doctype(XMLParserObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames);
 static PyObject *
 _elementtree_XMLParser_doctype_impl(XMLParserObject *self, PyObject *name,
                                     PyObject *pubid, PyObject *system);
diff --git a/Modules/_io/clinic/bufferedio.c.h b/Modules/_io/clinic/bufferedio.c.h
index ed584f8e9f1..4337ecfaa99 100644
--- a/Modules/_io/clinic/bufferedio.c.h
+++ b/Modules/_io/clinic/bufferedio.c.h
@@ -309,22 +309,26 @@ PyDoc_STRVAR(_io__Buffered_truncate__doc__,
 "\n");
 
 #define _IO__BUFFERED_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io__Buffered_truncate, METH_VARARGS, _io__Buffered_truncate__doc__},
+    {"truncate", (PyCFunction)_io__Buffered_truncate, METH_FASTCALL, _io__Buffered_truncate__doc__},
 
 static PyObject *
 _io__Buffered_truncate_impl(buffered *self, PyObject *pos);
 
 static PyObject *
-_io__Buffered_truncate(buffered *self, PyObject *args)
+_io__Buffered_truncate(buffered *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *pos = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "truncate",
+    if (!_PyArg_UnpackStack(args, nargs, "truncate",
         0, 1,
         &pos)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("truncate", kwnames)) {
+        goto exit;
+    }
     return_value = _io__Buffered_truncate_impl(self, pos);
 
 exit:
@@ -496,4 +500,4 @@ _io_BufferedRandom___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=e6e584216a10d67e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=e37b969b1acaa09c input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/bytesio.c.h b/Modules/_io/clinic/bytesio.c.h
index 11b976c503a..656e7ecd131 100644
--- a/Modules/_io/clinic/bytesio.c.h
+++ b/Modules/_io/clinic/bytesio.c.h
@@ -158,22 +158,26 @@ PyDoc_STRVAR(_io_BytesIO_read__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO_BYTESIO_READ_METHODDEF    \
-    {"read", (PyCFunction)_io_BytesIO_read, METH_VARARGS, _io_BytesIO_read__doc__},
+    {"read", (PyCFunction)_io_BytesIO_read, METH_FASTCALL, _io_BytesIO_read__doc__},
 
 static PyObject *
 _io_BytesIO_read_impl(bytesio *self, PyObject *arg);
 
 static PyObject *
-_io_BytesIO_read(bytesio *self, PyObject *args)
+_io_BytesIO_read(bytesio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *arg = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "read",
+    if (!_PyArg_UnpackStack(args, nargs, "read",
         0, 1,
         &arg)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("read", kwnames)) {
+        goto exit;
+    }
     return_value = _io_BytesIO_read_impl(self, arg);
 
 exit:
@@ -190,22 +194,26 @@ PyDoc_STRVAR(_io_BytesIO_read1__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO_BYTESIO_READ1_METHODDEF    \
-    {"read1", (PyCFunction)_io_BytesIO_read1, METH_VARARGS, _io_BytesIO_read1__doc__},
+    {"read1", (PyCFunction)_io_BytesIO_read1, METH_FASTCALL, _io_BytesIO_read1__doc__},
 
 static PyObject *
 _io_BytesIO_read1_impl(bytesio *self, PyObject *size);
 
 static PyObject *
-_io_BytesIO_read1(bytesio *self, PyObject *args)
+_io_BytesIO_read1(bytesio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *size = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "read1",
+    if (!_PyArg_UnpackStack(args, nargs, "read1",
         0, 1,
         &size)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("read1", kwnames)) {
+        goto exit;
+    }
     return_value = _io_BytesIO_read1_impl(self, size);
 
 exit:
@@ -223,22 +231,26 @@ PyDoc_STRVAR(_io_BytesIO_readline__doc__,
 "Return an empty bytes object at EOF.");
 
 #define _IO_BYTESIO_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_io_BytesIO_readline, METH_VARARGS, _io_BytesIO_readline__doc__},
+    {"readline", (PyCFunction)_io_BytesIO_readline, METH_FASTCALL, _io_BytesIO_readline__doc__},
 
 static PyObject *
 _io_BytesIO_readline_impl(bytesio *self, PyObject *arg);
 
 static PyObject *
-_io_BytesIO_readline(bytesio *self, PyObject *args)
+_io_BytesIO_readline(bytesio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *arg = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "readline",
+    if (!_PyArg_UnpackStack(args, nargs, "readline",
         0, 1,
         &arg)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("readline", kwnames)) {
+        goto exit;
+    }
     return_value = _io_BytesIO_readline_impl(self, arg);
 
 exit:
@@ -256,22 +268,26 @@ PyDoc_STRVAR(_io_BytesIO_readlines__doc__,
 "total number of bytes in the lines returned.");
 
 #define _IO_BYTESIO_READLINES_METHODDEF    \
-    {"readlines", (PyCFunction)_io_BytesIO_readlines, METH_VARARGS, _io_BytesIO_readlines__doc__},
+    {"readlines", (PyCFunction)_io_BytesIO_readlines, METH_FASTCALL, _io_BytesIO_readlines__doc__},
 
 static PyObject *
 _io_BytesIO_readlines_impl(bytesio *self, PyObject *arg);
 
 static PyObject *
-_io_BytesIO_readlines(bytesio *self, PyObject *args)
+_io_BytesIO_readlines(bytesio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *arg = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "readlines",
+    if (!_PyArg_UnpackStack(args, nargs, "readlines",
         0, 1,
         &arg)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("readlines", kwnames)) {
+        goto exit;
+    }
     return_value = _io_BytesIO_readlines_impl(self, arg);
 
 exit:
@@ -323,22 +339,26 @@ PyDoc_STRVAR(_io_BytesIO_truncate__doc__,
 "The current file position is unchanged.  Returns the new size.");
 
 #define _IO_BYTESIO_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_BytesIO_truncate, METH_VARARGS, _io_BytesIO_truncate__doc__},
+    {"truncate", (PyCFunction)_io_BytesIO_truncate, METH_FASTCALL, _io_BytesIO_truncate__doc__},
 
 static PyObject *
 _io_BytesIO_truncate_impl(bytesio *self, PyObject *arg);
 
 static PyObject *
-_io_BytesIO_truncate(bytesio *self, PyObject *args)
+_io_BytesIO_truncate(bytesio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *arg = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "truncate",
+    if (!_PyArg_UnpackStack(args, nargs, "truncate",
         0, 1,
         &arg)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("truncate", kwnames)) {
+        goto exit;
+    }
     return_value = _io_BytesIO_truncate_impl(self, arg);
 
 exit:
@@ -452,4 +472,4 @@ _io_BytesIO___init__(PyObject *self, PyObject *args, PyObject *kwargs)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=056f24eece495a8f input=a9049054013a1b77]*/
+/*[clinic end generated code: output=138ee6ad6951bc84 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/fileio.c.h b/Modules/_io/clinic/fileio.c.h
index 411a8c0574d..7a8e2c64c35 100644
--- a/Modules/_io/clinic/fileio.c.h
+++ b/Modules/_io/clinic/fileio.c.h
@@ -336,22 +336,26 @@ PyDoc_STRVAR(_io_FileIO_truncate__doc__,
 "The current file position is changed to the value of size.");
 
 #define _IO_FILEIO_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_FileIO_truncate, METH_VARARGS, _io_FileIO_truncate__doc__},
+    {"truncate", (PyCFunction)_io_FileIO_truncate, METH_FASTCALL, _io_FileIO_truncate__doc__},
 
 static PyObject *
 _io_FileIO_truncate_impl(fileio *self, PyObject *posobj);
 
 static PyObject *
-_io_FileIO_truncate(fileio *self, PyObject *args)
+_io_FileIO_truncate(fileio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *posobj = NULL;
 
-    if (!PyArg_UnpackTuple(args, "truncate",
+    if (!_PyArg_UnpackStack(args, nargs, "truncate",
         0, 1,
         &posobj)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("truncate", kwnames)) {
+        goto exit;
+    }
     return_value = _io_FileIO_truncate_impl(self, posobj);
 
 exit:
@@ -381,4 +385,4 @@ _io_FileIO_isatty(fileio *self, PyObject *Py_UNUSED(ignored))
 #ifndef _IO_FILEIO_TRUNCATE_METHODDEF
     #define _IO_FILEIO_TRUNCATE_METHODDEF
 #endif /* !defined(_IO_FILEIO_TRUNCATE_METHODDEF) */
-/*[clinic end generated code: output=5c2a0b493c0af58b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=034d782a0daa82bd input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/stringio.c.h b/Modules/_io/clinic/stringio.c.h
index e61720184bd..af467d687f0 100644
--- a/Modules/_io/clinic/stringio.c.h
+++ b/Modules/_io/clinic/stringio.c.h
@@ -48,22 +48,26 @@ PyDoc_STRVAR(_io_StringIO_read__doc__,
 "is reached. Return an empty string at EOF.");
 
 #define _IO_STRINGIO_READ_METHODDEF    \
-    {"read", (PyCFunction)_io_StringIO_read, METH_VARARGS, _io_StringIO_read__doc__},
+    {"read", (PyCFunction)_io_StringIO_read, METH_FASTCALL, _io_StringIO_read__doc__},
 
 static PyObject *
 _io_StringIO_read_impl(stringio *self, PyObject *arg);
 
 static PyObject *
-_io_StringIO_read(stringio *self, PyObject *args)
+_io_StringIO_read(stringio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *arg = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "read",
+    if (!_PyArg_UnpackStack(args, nargs, "read",
         0, 1,
         &arg)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("read", kwnames)) {
+        goto exit;
+    }
     return_value = _io_StringIO_read_impl(self, arg);
 
 exit:
@@ -79,22 +83,26 @@ PyDoc_STRVAR(_io_StringIO_readline__doc__,
 "Returns an empty string if EOF is hit immediately.");
 
 #define _IO_STRINGIO_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_io_StringIO_readline, METH_VARARGS, _io_StringIO_readline__doc__},
+    {"readline", (PyCFunction)_io_StringIO_readline, METH_FASTCALL, _io_StringIO_readline__doc__},
 
 static PyObject *
 _io_StringIO_readline_impl(stringio *self, PyObject *arg);
 
 static PyObject *
-_io_StringIO_readline(stringio *self, PyObject *args)
+_io_StringIO_readline(stringio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *arg = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "readline",
+    if (!_PyArg_UnpackStack(args, nargs, "readline",
         0, 1,
         &arg)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("readline", kwnames)) {
+        goto exit;
+    }
     return_value = _io_StringIO_readline_impl(self, arg);
 
 exit:
@@ -112,22 +120,26 @@ PyDoc_STRVAR(_io_StringIO_truncate__doc__,
 "Returns the new absolute position.");
 
 #define _IO_STRINGIO_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_StringIO_truncate, METH_VARARGS, _io_StringIO_truncate__doc__},
+    {"truncate", (PyCFunction)_io_StringIO_truncate, METH_FASTCALL, _io_StringIO_truncate__doc__},
 
 static PyObject *
 _io_StringIO_truncate_impl(stringio *self, PyObject *arg);
 
 static PyObject *
-_io_StringIO_truncate(stringio *self, PyObject *args)
+_io_StringIO_truncate(stringio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *arg = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "truncate",
+    if (!_PyArg_UnpackStack(args, nargs, "truncate",
         0, 1,
         &arg)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("truncate", kwnames)) {
+        goto exit;
+    }
     return_value = _io_StringIO_truncate_impl(self, arg);
 
 exit:
@@ -293,4 +305,4 @@ _io_StringIO_seekable(stringio *self, PyObject *Py_UNUSED(ignored))
 {
     return _io_StringIO_seekable_impl(self);
 }
-/*[clinic end generated code: output=69bf262268745061 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=ce8018ec29def422 input=a9049054013a1b77]*/
diff --git a/Modules/_io/clinic/textio.c.h b/Modules/_io/clinic/textio.c.h
index 1844e4d2869..46b3edafa92 100644
--- a/Modules/_io/clinic/textio.c.h
+++ b/Modules/_io/clinic/textio.c.h
@@ -336,22 +336,26 @@ PyDoc_STRVAR(_io_TextIOWrapper_truncate__doc__,
 "\n");
 
 #define _IO_TEXTIOWRAPPER_TRUNCATE_METHODDEF    \
-    {"truncate", (PyCFunction)_io_TextIOWrapper_truncate, METH_VARARGS, _io_TextIOWrapper_truncate__doc__},
+    {"truncate", (PyCFunction)_io_TextIOWrapper_truncate, METH_FASTCALL, _io_TextIOWrapper_truncate__doc__},
 
 static PyObject *
 _io_TextIOWrapper_truncate_impl(textio *self, PyObject *pos);
 
 static PyObject *
-_io_TextIOWrapper_truncate(textio *self, PyObject *args)
+_io_TextIOWrapper_truncate(textio *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *pos = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "truncate",
+    if (!_PyArg_UnpackStack(args, nargs, "truncate",
         0, 1,
         &pos)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("truncate", kwnames)) {
+        goto exit;
+    }
     return_value = _io_TextIOWrapper_truncate_impl(self, pos);
 
 exit:
@@ -476,4 +480,4 @@ _io_TextIOWrapper_close(textio *self, PyObject *Py_UNUSED(ignored))
 {
     return _io_TextIOWrapper_close_impl(self);
 }
-/*[clinic end generated code: output=1f8367c7a3301670 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=67eba50449900a96 input=a9049054013a1b77]*/
diff --git a/Modules/cjkcodecs/clinic/multibytecodec.c.h b/Modules/cjkcodecs/clinic/multibytecodec.c.h
index 005a1ba1d9a..4be06bbd668 100644
--- a/Modules/cjkcodecs/clinic/multibytecodec.c.h
+++ b/Modules/cjkcodecs/clinic/multibytecodec.c.h
@@ -192,23 +192,27 @@ PyDoc_STRVAR(_multibytecodec_MultibyteStreamReader_read__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTESTREAMREADER_READ_METHODDEF    \
-    {"read", (PyCFunction)_multibytecodec_MultibyteStreamReader_read, METH_VARARGS, _multibytecodec_MultibyteStreamReader_read__doc__},
+    {"read", (PyCFunction)_multibytecodec_MultibyteStreamReader_read, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_read__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteStreamReader_read_impl(MultibyteStreamReaderObject *self,
                                                 PyObject *sizeobj);
 
 static PyObject *
-_multibytecodec_MultibyteStreamReader_read(MultibyteStreamReaderObject *self, PyObject *args)
+_multibytecodec_MultibyteStreamReader_read(MultibyteStreamReaderObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *sizeobj = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "read",
+    if (!_PyArg_UnpackStack(args, nargs, "read",
         0, 1,
         &sizeobj)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("read", kwnames)) {
+        goto exit;
+    }
     return_value = _multibytecodec_MultibyteStreamReader_read_impl(self, sizeobj);
 
 exit:
@@ -221,23 +225,27 @@ PyDoc_STRVAR(_multibytecodec_MultibyteStreamReader_readline__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTESTREAMREADER_READLINE_METHODDEF    \
-    {"readline", (PyCFunction)_multibytecodec_MultibyteStreamReader_readline, METH_VARARGS, _multibytecodec_MultibyteStreamReader_readline__doc__},
+    {"readline", (PyCFunction)_multibytecodec_MultibyteStreamReader_readline, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_readline__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteStreamReader_readline_impl(MultibyteStreamReaderObject *self,
                                                     PyObject *sizeobj);
 
 static PyObject *
-_multibytecodec_MultibyteStreamReader_readline(MultibyteStreamReaderObject *self, PyObject *args)
+_multibytecodec_MultibyteStreamReader_readline(MultibyteStreamReaderObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *sizeobj = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "readline",
+    if (!_PyArg_UnpackStack(args, nargs, "readline",
         0, 1,
         &sizeobj)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("readline", kwnames)) {
+        goto exit;
+    }
     return_value = _multibytecodec_MultibyteStreamReader_readline_impl(self, sizeobj);
 
 exit:
@@ -250,23 +258,27 @@ PyDoc_STRVAR(_multibytecodec_MultibyteStreamReader_readlines__doc__,
 "\n");
 
 #define _MULTIBYTECODEC_MULTIBYTESTREAMREADER_READLINES_METHODDEF    \
-    {"readlines", (PyCFunction)_multibytecodec_MultibyteStreamReader_readlines, METH_VARARGS, _multibytecodec_MultibyteStreamReader_readlines__doc__},
+    {"readlines", (PyCFunction)_multibytecodec_MultibyteStreamReader_readlines, METH_FASTCALL, _multibytecodec_MultibyteStreamReader_readlines__doc__},
 
 static PyObject *
 _multibytecodec_MultibyteStreamReader_readlines_impl(MultibyteStreamReaderObject *self,
                                                      PyObject *sizehintobj);
 
 static PyObject *
-_multibytecodec_MultibyteStreamReader_readlines(MultibyteStreamReaderObject *self, PyObject *args)
+_multibytecodec_MultibyteStreamReader_readlines(MultibyteStreamReaderObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *sizehintobj = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "readlines",
+    if (!_PyArg_UnpackStack(args, nargs, "readlines",
         0, 1,
         &sizehintobj)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("readlines", kwnames)) {
+        goto exit;
+    }
     return_value = _multibytecodec_MultibyteStreamReader_readlines_impl(self, sizehintobj);
 
 exit:
@@ -330,4 +342,4 @@ PyDoc_STRVAR(_multibytecodec___create_codec__doc__,
 
 #define _MULTIBYTECODEC___CREATE_CODEC_METHODDEF    \
     {"__create_codec", (PyCFunction)_multibytecodec___create_codec, METH_O, _multibytecodec___create_codec__doc__},
-/*[clinic end generated code: output=7d6a05b0a581fd17 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=26710ffd4b3c7d7e input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_elementtree.c.h b/Modules/clinic/_elementtree.c.h
index 410794ec91a..c13cb35c708 100644
--- a/Modules/clinic/_elementtree.c.h
+++ b/Modules/clinic/_elementtree.c.h
@@ -423,24 +423,28 @@ PyDoc_STRVAR(_elementtree_Element_makeelement__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_MAKEELEMENT_METHODDEF    \
-    {"makeelement", (PyCFunction)_elementtree_Element_makeelement, METH_VARARGS, _elementtree_Element_makeelement__doc__},
+    {"makeelement", (PyCFunction)_elementtree_Element_makeelement, METH_FASTCALL, _elementtree_Element_makeelement__doc__},
 
 static PyObject *
 _elementtree_Element_makeelement_impl(ElementObject *self, PyObject *tag,
                                       PyObject *attrib);
 
 static PyObject *
-_elementtree_Element_makeelement(ElementObject *self, PyObject *args)
+_elementtree_Element_makeelement(ElementObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *tag;
     PyObject *attrib;
 
-    if (!PyArg_UnpackTuple(args, "makeelement",
+    if (!_PyArg_UnpackStack(args, nargs, "makeelement",
         2, 2,
         &tag, &attrib)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("makeelement", kwnames)) {
+        goto exit;
+    }
     return_value = _elementtree_Element_makeelement_impl(self, tag, attrib);
 
 exit:
@@ -479,24 +483,28 @@ PyDoc_STRVAR(_elementtree_Element_set__doc__,
 "\n");
 
 #define _ELEMENTTREE_ELEMENT_SET_METHODDEF    \
-    {"set", (PyCFunction)_elementtree_Element_set, METH_VARARGS, _elementtree_Element_set__doc__},
+    {"set", (PyCFunction)_elementtree_Element_set, METH_FASTCALL, _elementtree_Element_set__doc__},
 
 static PyObject *
 _elementtree_Element_set_impl(ElementObject *self, PyObject *key,
                               PyObject *value);
 
 static PyObject *
-_elementtree_Element_set(ElementObject *self, PyObject *args)
+_elementtree_Element_set(ElementObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *key;
     PyObject *value;
 
-    if (!PyArg_UnpackTuple(args, "set",
+    if (!_PyArg_UnpackStack(args, nargs, "set",
         2, 2,
         &key, &value)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("set", kwnames)) {
+        goto exit;
+    }
     return_value = _elementtree_Element_set_impl(self, key, value);
 
 exit:
@@ -564,24 +572,28 @@ PyDoc_STRVAR(_elementtree_TreeBuilder_start__doc__,
 "\n");
 
 #define _ELEMENTTREE_TREEBUILDER_START_METHODDEF    \
-    {"start", (PyCFunction)_elementtree_TreeBuilder_start, METH_VARARGS, _elementtree_TreeBuilder_start__doc__},
+    {"start", (PyCFunction)_elementtree_TreeBuilder_start, METH_FASTCALL, _elementtree_TreeBuilder_start__doc__},
 
 static PyObject *
 _elementtree_TreeBuilder_start_impl(TreeBuilderObject *self, PyObject *tag,
                                     PyObject *attrs);
 
 static PyObject *
-_elementtree_TreeBuilder_start(TreeBuilderObject *self, PyObject *args)
+_elementtree_TreeBuilder_start(TreeBuilderObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *tag;
     PyObject *attrs = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "start",
+    if (!_PyArg_UnpackStack(args, nargs, "start",
         1, 2,
         &tag, &attrs)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("start", kwnames)) {
+        goto exit;
+    }
     return_value = _elementtree_TreeBuilder_start_impl(self, tag, attrs);
 
 exit:
@@ -651,25 +663,29 @@ PyDoc_STRVAR(_elementtree_XMLParser_doctype__doc__,
 "\n");
 
 #define _ELEMENTTREE_XMLPARSER_DOCTYPE_METHODDEF    \
-    {"doctype", (PyCFunction)_elementtree_XMLParser_doctype, METH_VARARGS, _elementtree_XMLParser_doctype__doc__},
+    {"doctype", (PyCFunction)_elementtree_XMLParser_doctype, METH_FASTCALL, _elementtree_XMLParser_doctype__doc__},
 
 static PyObject *
 _elementtree_XMLParser_doctype_impl(XMLParserObject *self, PyObject *name,
                                     PyObject *pubid, PyObject *system);
 
 static PyObject *
-_elementtree_XMLParser_doctype(XMLParserObject *self, PyObject *args)
+_elementtree_XMLParser_doctype(XMLParserObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *name;
     PyObject *pubid;
     PyObject *system;
 
-    if (!PyArg_UnpackTuple(args, "doctype",
+    if (!_PyArg_UnpackStack(args, nargs, "doctype",
         3, 3,
         &name, &pubid, &system)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("doctype", kwnames)) {
+        goto exit;
+    }
     return_value = _elementtree_XMLParser_doctype_impl(self, name, pubid, system);
 
 exit:
@@ -682,7 +698,7 @@ PyDoc_STRVAR(_elementtree_XMLParser__setevents__doc__,
 "\n");
 
 #define _ELEMENTTREE_XMLPARSER__SETEVENTS_METHODDEF    \
-    {"_setevents", (PyCFunction)_elementtree_XMLParser__setevents, METH_VARARGS, _elementtree_XMLParser__setevents__doc__},
+    {"_setevents", (PyCFunction)_elementtree_XMLParser__setevents, METH_FASTCALL, _elementtree_XMLParser__setevents__doc__},
 
 static PyObject *
 _elementtree_XMLParser__setevents_impl(XMLParserObject *self,
@@ -690,20 +706,24 @@ _elementtree_XMLParser__setevents_impl(XMLParserObject *self,
                                        PyObject *events_to_report);
 
 static PyObject *
-_elementtree_XMLParser__setevents(XMLParserObject *self, PyObject *args)
+_elementtree_XMLParser__setevents(XMLParserObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *events_queue;
     PyObject *events_to_report = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "_setevents",
+    if (!_PyArg_UnpackStack(args, nargs, "_setevents",
         1, 2,
         &events_queue, &events_to_report)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("_setevents", kwnames)) {
+        goto exit;
+    }
     return_value = _elementtree_XMLParser__setevents_impl(self, events_queue, events_to_report);
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=4e3d22c6f6d832b2 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b69fa98c40917f58 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_gdbmmodule.c.h b/Modules/clinic/_gdbmmodule.c.h
index 77d258bf657..b91cea109f2 100644
--- a/Modules/clinic/_gdbmmodule.c.h
+++ b/Modules/clinic/_gdbmmodule.c.h
@@ -9,23 +9,27 @@ PyDoc_STRVAR(_gdbm_gdbm_get__doc__,
 "Get the value for key, or default if not present.");
 
 #define _GDBM_GDBM_GET_METHODDEF    \
-    {"get", (PyCFunction)_gdbm_gdbm_get, METH_VARARGS, _gdbm_gdbm_get__doc__},
+    {"get", (PyCFunction)_gdbm_gdbm_get, METH_FASTCALL, _gdbm_gdbm_get__doc__},
 
 static PyObject *
 _gdbm_gdbm_get_impl(dbmobject *self, PyObject *key, PyObject *default_value);
 
 static PyObject *
-_gdbm_gdbm_get(dbmobject *self, PyObject *args)
+_gdbm_gdbm_get(dbmobject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *key;
     PyObject *default_value = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "get",
+    if (!_PyArg_UnpackStack(args, nargs, "get",
         1, 2,
         &key, &default_value)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("get", kwnames)) {
+        goto exit;
+    }
     return_value = _gdbm_gdbm_get_impl(self, key, default_value);
 
 exit:
@@ -39,24 +43,28 @@ PyDoc_STRVAR(_gdbm_gdbm_setdefault__doc__,
 "Get value for key, or set it to default and return default if not present.");
 
 #define _GDBM_GDBM_SETDEFAULT_METHODDEF    \
-    {"setdefault", (PyCFunction)_gdbm_gdbm_setdefault, METH_VARARGS, _gdbm_gdbm_setdefault__doc__},
+    {"setdefault", (PyCFunction)_gdbm_gdbm_setdefault, METH_FASTCALL, _gdbm_gdbm_setdefault__doc__},
 
 static PyObject *
 _gdbm_gdbm_setdefault_impl(dbmobject *self, PyObject *key,
                            PyObject *default_value);
 
 static PyObject *
-_gdbm_gdbm_setdefault(dbmobject *self, PyObject *args)
+_gdbm_gdbm_setdefault(dbmobject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *key;
     PyObject *default_value = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "setdefault",
+    if (!_PyArg_UnpackStack(args, nargs, "setdefault",
         1, 2,
         &key, &default_value)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("setdefault", kwnames)) {
+        goto exit;
+    }
     return_value = _gdbm_gdbm_setdefault_impl(self, key, default_value);
 
 exit:
@@ -257,4 +265,4 @@ dbmopen(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=1e47d62a35eeba8b input=a9049054013a1b77]*/
+/*[clinic end generated code: output=03a3a63a814ada93 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_pickle.c.h b/Modules/clinic/_pickle.c.h
index fdba8f90c25..e10730a6de8 100644
--- a/Modules/clinic/_pickle.c.h
+++ b/Modules/clinic/_pickle.c.h
@@ -199,7 +199,7 @@ PyDoc_STRVAR(_pickle_Unpickler_find_class__doc__,
 "needed.  Both arguments passed are str objects.");
 
 #define _PICKLE_UNPICKLER_FIND_CLASS_METHODDEF    \
-    {"find_class", (PyCFunction)_pickle_Unpickler_find_class, METH_VARARGS, _pickle_Unpickler_find_class__doc__},
+    {"find_class", (PyCFunction)_pickle_Unpickler_find_class, METH_FASTCALL, _pickle_Unpickler_find_class__doc__},
 
 static PyObject *
 _pickle_Unpickler_find_class_impl(UnpicklerObject *self,
@@ -207,17 +207,21 @@ _pickle_Unpickler_find_class_impl(UnpicklerObject *self,
                                   PyObject *global_name);
 
 static PyObject *
-_pickle_Unpickler_find_class(UnpicklerObject *self, PyObject *args)
+_pickle_Unpickler_find_class(UnpicklerObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *module_name;
     PyObject *global_name;
 
-    if (!PyArg_UnpackTuple(args, "find_class",
+    if (!_PyArg_UnpackStack(args, nargs, "find_class",
         2, 2,
         &module_name, &global_name)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("find_class", kwnames)) {
+        goto exit;
+    }
     return_value = _pickle_Unpickler_find_class_impl(self, module_name, global_name);
 
 exit:
@@ -560,4 +564,4 @@ _pickle_loads(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwn
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=d7222d1219039fbd input=a9049054013a1b77]*/
+/*[clinic end generated code: output=b921d325b2f7a096 input=a9049054013a1b77]*/
diff --git a/Modules/clinic/_sre.c.h b/Modules/clinic/_sre.c.h
index 39b2e270daf..fcb23e89191 100644
--- a/Modules/clinic/_sre.c.h
+++ b/Modules/clinic/_sre.c.h
@@ -551,23 +551,27 @@ PyDoc_STRVAR(_sre_SRE_Match_start__doc__,
 "Return index of the start of the substring matched by group.");
 
 #define _SRE_SRE_MATCH_START_METHODDEF    \
-    {"start", (PyCFunction)_sre_SRE_Match_start, METH_VARARGS, _sre_SRE_Match_start__doc__},
+    {"start", (PyCFunction)_sre_SRE_Match_start, METH_FASTCALL, _sre_SRE_Match_start__doc__},
 
 static Py_ssize_t
 _sre_SRE_Match_start_impl(MatchObject *self, PyObject *group);
 
 static PyObject *
-_sre_SRE_Match_start(MatchObject *self, PyObject *args)
+_sre_SRE_Match_start(MatchObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *group = NULL;
     Py_ssize_t _return_value;
 
-    if (!PyArg_UnpackTuple(args, "start",
+    if (!_PyArg_UnpackStack(args, nargs, "start",
         0, 1,
         &group)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("start", kwnames)) {
+        goto exit;
+    }
     _return_value = _sre_SRE_Match_start_impl(self, group);
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
@@ -585,23 +589,27 @@ PyDoc_STRVAR(_sre_SRE_Match_end__doc__,
 "Return index of the end of the substring matched by group.");
 
 #define _SRE_SRE_MATCH_END_METHODDEF    \
-    {"end", (PyCFunction)_sre_SRE_Match_end, METH_VARARGS, _sre_SRE_Match_end__doc__},
+    {"end", (PyCFunction)_sre_SRE_Match_end, METH_FASTCALL, _sre_SRE_Match_end__doc__},
 
 static Py_ssize_t
 _sre_SRE_Match_end_impl(MatchObject *self, PyObject *group);
 
 static PyObject *
-_sre_SRE_Match_end(MatchObject *self, PyObject *args)
+_sre_SRE_Match_end(MatchObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *group = NULL;
     Py_ssize_t _return_value;
 
-    if (!PyArg_UnpackTuple(args, "end",
+    if (!_PyArg_UnpackStack(args, nargs, "end",
         0, 1,
         &group)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("end", kwnames)) {
+        goto exit;
+    }
     _return_value = _sre_SRE_Match_end_impl(self, group);
     if ((_return_value == -1) && PyErr_Occurred()) {
         goto exit;
@@ -619,22 +627,26 @@ PyDoc_STRVAR(_sre_SRE_Match_span__doc__,
 "For MatchObject m, return the 2-tuple (m.start(group), m.end(group)).");
 
 #define _SRE_SRE_MATCH_SPAN_METHODDEF    \
-    {"span", (PyCFunction)_sre_SRE_Match_span, METH_VARARGS, _sre_SRE_Match_span__doc__},
+    {"span", (PyCFunction)_sre_SRE_Match_span, METH_FASTCALL, _sre_SRE_Match_span__doc__},
 
 static PyObject *
 _sre_SRE_Match_span_impl(MatchObject *self, PyObject *group);
 
 static PyObject *
-_sre_SRE_Match_span(MatchObject *self, PyObject *args)
+_sre_SRE_Match_span(MatchObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *group = NULL;
 
-    if (!PyArg_UnpackTuple(args, "span",
+    if (!_PyArg_UnpackStack(args, nargs, "span",
         0, 1,
         &group)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("span", kwnames)) {
+        goto exit;
+    }
     return_value = _sre_SRE_Match_span_impl(self, group);
 
 exit:
@@ -720,4 +732,4 @@ _sre_SRE_Scanner_search(ScannerObject *self, PyObject *Py_UNUSED(ignored))
 {
     return _sre_SRE_Scanner_search_impl(self);
 }
-/*[clinic end generated code: output=3dff18d3b6110b86 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=5df18da8e2dc762c input=a9049054013a1b77]*/
diff --git a/Modules/clinic/signalmodule.c.h b/Modules/clinic/signalmodule.c.h
index 776dcbac212..9e16f322914 100644
--- a/Modules/clinic/signalmodule.c.h
+++ b/Modules/clinic/signalmodule.c.h
@@ -353,24 +353,28 @@ PyDoc_STRVAR(signal_sigtimedwait__doc__,
 "The timeout is specified in seconds, with floating point numbers allowed.");
 
 #define SIGNAL_SIGTIMEDWAIT_METHODDEF    \
-    {"sigtimedwait", (PyCFunction)signal_sigtimedwait, METH_VARARGS, signal_sigtimedwait__doc__},
+    {"sigtimedwait", (PyCFunction)signal_sigtimedwait, METH_FASTCALL, signal_sigtimedwait__doc__},
 
 static PyObject *
 signal_sigtimedwait_impl(PyObject *module, PyObject *sigset,
                          PyObject *timeout_obj);
 
 static PyObject *
-signal_sigtimedwait(PyObject *module, PyObject *args)
+signal_sigtimedwait(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *sigset;
     PyObject *timeout_obj;
 
-    if (!PyArg_UnpackTuple(args, "sigtimedwait",
+    if (!_PyArg_UnpackStack(args, nargs, "sigtimedwait",
         2, 2,
         &sigset, &timeout_obj)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("sigtimedwait", kwnames)) {
+        goto exit;
+    }
     return_value = signal_sigtimedwait_impl(module, sigset, timeout_obj);
 
 exit:
@@ -459,4 +463,4 @@ exit:
 #ifndef SIGNAL_PTHREAD_KILL_METHODDEF
     #define SIGNAL_PTHREAD_KILL_METHODDEF
 #endif /* !defined(SIGNAL_PTHREAD_KILL_METHODDEF) */
-/*[clinic end generated code: output=b49f7bfff44d1256 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=fab3dba32c058588 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytearrayobject.c.h b/Objects/clinic/bytearrayobject.c.h
index 3e39e9a7bd1..a181d9a99bf 100644
--- a/Objects/clinic/bytearrayobject.c.h
+++ b/Objects/clinic/bytearrayobject.c.h
@@ -463,22 +463,26 @@ PyDoc_STRVAR(bytearray_strip__doc__,
 "If the argument is omitted or None, strip leading and trailing ASCII whitespace.");
 
 #define BYTEARRAY_STRIP_METHODDEF    \
-    {"strip", (PyCFunction)bytearray_strip, METH_VARARGS, bytearray_strip__doc__},
+    {"strip", (PyCFunction)bytearray_strip, METH_FASTCALL, bytearray_strip__doc__},
 
 static PyObject *
 bytearray_strip_impl(PyByteArrayObject *self, PyObject *bytes);
 
 static PyObject *
-bytearray_strip(PyByteArrayObject *self, PyObject *args)
+bytearray_strip(PyByteArrayObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *bytes = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "strip",
+    if (!_PyArg_UnpackStack(args, nargs, "strip",
         0, 1,
         &bytes)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("strip", kwnames)) {
+        goto exit;
+    }
     return_value = bytearray_strip_impl(self, bytes);
 
 exit:
@@ -494,22 +498,26 @@ PyDoc_STRVAR(bytearray_lstrip__doc__,
 "If the argument is omitted or None, strip leading ASCII whitespace.");
 
 #define BYTEARRAY_LSTRIP_METHODDEF    \
-    {"lstrip", (PyCFunction)bytearray_lstrip, METH_VARARGS, bytearray_lstrip__doc__},
+    {"lstrip", (PyCFunction)bytearray_lstrip, METH_FASTCALL, bytearray_lstrip__doc__},
 
 static PyObject *
 bytearray_lstrip_impl(PyByteArrayObject *self, PyObject *bytes);
 
 static PyObject *
-bytearray_lstrip(PyByteArrayObject *self, PyObject *args)
+bytearray_lstrip(PyByteArrayObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *bytes = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "lstrip",
+    if (!_PyArg_UnpackStack(args, nargs, "lstrip",
         0, 1,
         &bytes)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("lstrip", kwnames)) {
+        goto exit;
+    }
     return_value = bytearray_lstrip_impl(self, bytes);
 
 exit:
@@ -525,22 +533,26 @@ PyDoc_STRVAR(bytearray_rstrip__doc__,
 "If the argument is omitted or None, strip trailing ASCII whitespace.");
 
 #define BYTEARRAY_RSTRIP_METHODDEF    \
-    {"rstrip", (PyCFunction)bytearray_rstrip, METH_VARARGS, bytearray_rstrip__doc__},
+    {"rstrip", (PyCFunction)bytearray_rstrip, METH_FASTCALL, bytearray_rstrip__doc__},
 
 static PyObject *
 bytearray_rstrip_impl(PyByteArrayObject *self, PyObject *bytes);
 
 static PyObject *
-bytearray_rstrip(PyByteArrayObject *self, PyObject *args)
+bytearray_rstrip(PyByteArrayObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *bytes = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "rstrip",
+    if (!_PyArg_UnpackStack(args, nargs, "rstrip",
         0, 1,
         &bytes)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("rstrip", kwnames)) {
+        goto exit;
+    }
     return_value = bytearray_rstrip_impl(self, bytes);
 
 exit:
@@ -731,4 +743,4 @@ bytearray_sizeof(PyByteArrayObject *self, PyObject *Py_UNUSED(ignored))
 {
     return bytearray_sizeof_impl(self);
 }
-/*[clinic end generated code: output=e6c057d1cd7c2496 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=f5c364927425fae8 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/bytesobject.c.h b/Objects/clinic/bytesobject.c.h
index 330cb84853e..c73b56023db 100644
--- a/Objects/clinic/bytesobject.c.h
+++ b/Objects/clinic/bytesobject.c.h
@@ -184,22 +184,26 @@ PyDoc_STRVAR(bytes_strip__doc__,
 "If the argument is omitted or None, strip leading and trailing ASCII whitespace.");
 
 #define BYTES_STRIP_METHODDEF    \
-    {"strip", (PyCFunction)bytes_strip, METH_VARARGS, bytes_strip__doc__},
+    {"strip", (PyCFunction)bytes_strip, METH_FASTCALL, bytes_strip__doc__},
 
 static PyObject *
 bytes_strip_impl(PyBytesObject *self, PyObject *bytes);
 
 static PyObject *
-bytes_strip(PyBytesObject *self, PyObject *args)
+bytes_strip(PyBytesObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *bytes = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "strip",
+    if (!_PyArg_UnpackStack(args, nargs, "strip",
         0, 1,
         &bytes)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("strip", kwnames)) {
+        goto exit;
+    }
     return_value = bytes_strip_impl(self, bytes);
 
 exit:
@@ -215,22 +219,26 @@ PyDoc_STRVAR(bytes_lstrip__doc__,
 "If the argument is omitted or None, strip leading  ASCII whitespace.");
 
 #define BYTES_LSTRIP_METHODDEF    \
-    {"lstrip", (PyCFunction)bytes_lstrip, METH_VARARGS, bytes_lstrip__doc__},
+    {"lstrip", (PyCFunction)bytes_lstrip, METH_FASTCALL, bytes_lstrip__doc__},
 
 static PyObject *
 bytes_lstrip_impl(PyBytesObject *self, PyObject *bytes);
 
 static PyObject *
-bytes_lstrip(PyBytesObject *self, PyObject *args)
+bytes_lstrip(PyBytesObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *bytes = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "lstrip",
+    if (!_PyArg_UnpackStack(args, nargs, "lstrip",
         0, 1,
         &bytes)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("lstrip", kwnames)) {
+        goto exit;
+    }
     return_value = bytes_lstrip_impl(self, bytes);
 
 exit:
@@ -246,22 +254,26 @@ PyDoc_STRVAR(bytes_rstrip__doc__,
 "If the argument is omitted or None, strip trailing ASCII whitespace.");
 
 #define BYTES_RSTRIP_METHODDEF    \
-    {"rstrip", (PyCFunction)bytes_rstrip, METH_VARARGS, bytes_rstrip__doc__},
+    {"rstrip", (PyCFunction)bytes_rstrip, METH_FASTCALL, bytes_rstrip__doc__},
 
 static PyObject *
 bytes_rstrip_impl(PyBytesObject *self, PyObject *bytes);
 
 static PyObject *
-bytes_rstrip(PyBytesObject *self, PyObject *args)
+bytes_rstrip(PyBytesObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *bytes = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "rstrip",
+    if (!_PyArg_UnpackStack(args, nargs, "rstrip",
         0, 1,
         &bytes)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("rstrip", kwnames)) {
+        goto exit;
+    }
     return_value = bytes_rstrip_impl(self, bytes);
 
 exit:
@@ -507,4 +519,4 @@ bytes_fromhex(PyTypeObject *type, PyObject *arg)
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=2b8d3cff7e11045e input=a9049054013a1b77]*/
+/*[clinic end generated code: output=2504c1225108d348 input=a9049054013a1b77]*/
diff --git a/Objects/clinic/dictobject.c.h b/Objects/clinic/dictobject.c.h
index d0cdfc3edaf..3f06c0b5da7 100644
--- a/Objects/clinic/dictobject.c.h
+++ b/Objects/clinic/dictobject.c.h
@@ -9,23 +9,27 @@ PyDoc_STRVAR(dict_fromkeys__doc__,
 "Returns a new dict with keys from iterable and values equal to value.");
 
 #define DICT_FROMKEYS_METHODDEF    \
-    {"fromkeys", (PyCFunction)dict_fromkeys, METH_VARARGS|METH_CLASS, dict_fromkeys__doc__},
+    {"fromkeys", (PyCFunction)dict_fromkeys, METH_FASTCALL|METH_CLASS, dict_fromkeys__doc__},
 
 static PyObject *
 dict_fromkeys_impl(PyTypeObject *type, PyObject *iterable, PyObject *value);
 
 static PyObject *
-dict_fromkeys(PyTypeObject *type, PyObject *args)
+dict_fromkeys(PyTypeObject *type, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *iterable;
     PyObject *value = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "fromkeys",
+    if (!_PyArg_UnpackStack(args, nargs, "fromkeys",
         1, 2,
         &iterable, &value)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("fromkeys", kwnames)) {
+        goto exit;
+    }
     return_value = dict_fromkeys_impl(type, iterable, value);
 
 exit:
@@ -40,4 +44,4 @@ PyDoc_STRVAR(dict___contains____doc__,
 
 #define DICT___CONTAINS___METHODDEF    \
     {"__contains__", (PyCFunction)dict___contains__, METH_O|METH_COEXIST, dict___contains____doc__},
-/*[clinic end generated code: output=926326109e3d9839 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=69f3d767ed44e8ec input=a9049054013a1b77]*/
diff --git a/Objects/clinic/unicodeobject.c.h b/Objects/clinic/unicodeobject.c.h
index d968cbe3464..c4bf3a433cb 100644
--- a/Objects/clinic/unicodeobject.c.h
+++ b/Objects/clinic/unicodeobject.c.h
@@ -471,27 +471,31 @@ PyDoc_STRVAR(unicode_strip__doc__,
 "strip($self, chars=None, /)\n"
 "--\n"
 "\n"
-"Return a copy of the string with leading and trailing whitespace removed.\n"
+"Return a copy of the string with leading and trailing whitespace remove.\n"
 "\n"
 "If chars is given and not None, remove characters in chars instead.");
 
 #define UNICODE_STRIP_METHODDEF    \
-    {"strip", (PyCFunction)unicode_strip, METH_VARARGS, unicode_strip__doc__},
+    {"strip", (PyCFunction)unicode_strip, METH_FASTCALL, unicode_strip__doc__},
 
 static PyObject *
 unicode_strip_impl(PyObject *self, PyObject *chars);
 
 static PyObject *
-unicode_strip(PyObject *self, PyObject *args)
+unicode_strip(PyObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *chars = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "strip",
+    if (!_PyArg_UnpackStack(args, nargs, "strip",
         0, 1,
         &chars)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("strip", kwnames)) {
+        goto exit;
+    }
     return_value = unicode_strip_impl(self, chars);
 
 exit:
@@ -507,22 +511,26 @@ PyDoc_STRVAR(unicode_lstrip__doc__,
 "If chars is given and not None, remove characters in chars instead.");
 
 #define UNICODE_LSTRIP_METHODDEF    \
-    {"lstrip", (PyCFunction)unicode_lstrip, METH_VARARGS, unicode_lstrip__doc__},
+    {"lstrip", (PyCFunction)unicode_lstrip, METH_FASTCALL, unicode_lstrip__doc__},
 
 static PyObject *
 unicode_lstrip_impl(PyObject *self, PyObject *chars);
 
 static PyObject *
-unicode_lstrip(PyObject *self, PyObject *args)
+unicode_lstrip(PyObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *chars = NULL;
 
-    if (!PyArg_UnpackTuple(args, "lstrip",
+    if (!_PyArg_UnpackStack(args, nargs, "lstrip",
         0, 1,
         &chars)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("lstrip", kwnames)) {
+        goto exit;
+    }
     return_value = unicode_lstrip_impl(self, chars);
 
 exit:
@@ -538,22 +546,26 @@ PyDoc_STRVAR(unicode_rstrip__doc__,
 "If chars is given and not None, remove characters in chars instead.");
 
 #define UNICODE_RSTRIP_METHODDEF    \
-    {"rstrip", (PyCFunction)unicode_rstrip, METH_VARARGS, unicode_rstrip__doc__},
+    {"rstrip", (PyCFunction)unicode_rstrip, METH_FASTCALL, unicode_rstrip__doc__},
 
 static PyObject *
 unicode_rstrip_impl(PyObject *self, PyObject *chars);
 
 static PyObject *
-unicode_rstrip(PyObject *self, PyObject *args)
+unicode_rstrip(PyObject *self, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *chars = NULL;
 
-    if (!PyArg_UnpackTuple(args, "rstrip",
+    if (!_PyArg_UnpackStack(args, nargs, "rstrip",
         0, 1,
         &chars)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("rstrip", kwnames)) {
+        goto exit;
+    }
     return_value = unicode_rstrip_impl(self, chars);
 
 exit:
@@ -950,4 +962,4 @@ unicode_sizeof(PyObject *self, PyObject *Py_UNUSED(ignored))
 {
     return unicode_sizeof_impl(self);
 }
-/*[clinic end generated code: output=eb6a3ae361a1a379 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3d73f3dfd6ec7d83 input=a9049054013a1b77]*/
diff --git a/Objects/unicodeobject.c b/Objects/unicodeobject.c
index e2bdf088ab5..5fbe56cce14 100644
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@ -12453,14 +12453,14 @@ str.strip as unicode_strip
     chars: object = None
     /
 
-Return a copy of the string with leading and trailing whitespace removed.
+Return a copy of the string with leading and trailing whitespace remove.
 
 If chars is given and not None, remove characters in chars instead.
 [clinic start generated code]*/
 
 static PyObject *
 unicode_strip_impl(PyObject *self, PyObject *chars)
-/*[clinic end generated code: output=ca19018454345d57 input=385289c6f423b954]*/
+/*[clinic end generated code: output=ca19018454345d57 input=eefe24a1059c352b]*/
 {
     return do_argstrip(self, BOTHSTRIP, chars);
 }
diff --git a/Python/clinic/bltinmodule.c.h b/Python/clinic/bltinmodule.c.h
index abf45b8a816..b52bde26124 100644
--- a/Python/clinic/bltinmodule.c.h
+++ b/Python/clinic/bltinmodule.c.h
@@ -189,23 +189,27 @@ PyDoc_STRVAR(builtin_divmod__doc__,
 "Return the tuple (x//y, x%y).  Invariant: div*y + mod == x.");
 
 #define BUILTIN_DIVMOD_METHODDEF    \
-    {"divmod", (PyCFunction)builtin_divmod, METH_VARARGS, builtin_divmod__doc__},
+    {"divmod", (PyCFunction)builtin_divmod, METH_FASTCALL, builtin_divmod__doc__},
 
 static PyObject *
 builtin_divmod_impl(PyObject *module, PyObject *x, PyObject *y);
 
 static PyObject *
-builtin_divmod(PyObject *module, PyObject *args)
+builtin_divmod(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *x;
     PyObject *y;
 
-    if (!PyArg_UnpackTuple(args, "divmod",
+    if (!_PyArg_UnpackStack(args, nargs, "divmod",
         2, 2,
         &x, &y)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("divmod", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_divmod_impl(module, x, y);
 
 exit:
@@ -225,25 +229,29 @@ PyDoc_STRVAR(builtin_eval__doc__,
 "If only globals is given, locals defaults to it.");
 
 #define BUILTIN_EVAL_METHODDEF    \
-    {"eval", (PyCFunction)builtin_eval, METH_VARARGS, builtin_eval__doc__},
+    {"eval", (PyCFunction)builtin_eval, METH_FASTCALL, builtin_eval__doc__},
 
 static PyObject *
 builtin_eval_impl(PyObject *module, PyObject *source, PyObject *globals,
                   PyObject *locals);
 
 static PyObject *
-builtin_eval(PyObject *module, PyObject *args)
+builtin_eval(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *source;
     PyObject *globals = Py_None;
     PyObject *locals = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "eval",
+    if (!_PyArg_UnpackStack(args, nargs, "eval",
         1, 3,
         &source, &globals, &locals)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("eval", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_eval_impl(module, source, globals, locals);
 
 exit:
@@ -263,25 +271,29 @@ PyDoc_STRVAR(builtin_exec__doc__,
 "If only globals is given, locals defaults to it.");
 
 #define BUILTIN_EXEC_METHODDEF    \
-    {"exec", (PyCFunction)builtin_exec, METH_VARARGS, builtin_exec__doc__},
+    {"exec", (PyCFunction)builtin_exec, METH_FASTCALL, builtin_exec__doc__},
 
 static PyObject *
 builtin_exec_impl(PyObject *module, PyObject *source, PyObject *globals,
                   PyObject *locals);
 
 static PyObject *
-builtin_exec(PyObject *module, PyObject *args)
+builtin_exec(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *source;
     PyObject *globals = Py_None;
     PyObject *locals = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "exec",
+    if (!_PyArg_UnpackStack(args, nargs, "exec",
         1, 3,
         &source, &globals, &locals)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("exec", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_exec_impl(module, source, globals, locals);
 
 exit:
@@ -318,23 +330,27 @@ PyDoc_STRVAR(builtin_hasattr__doc__,
 "This is done by calling getattr(obj, name) and catching AttributeError.");
 
 #define BUILTIN_HASATTR_METHODDEF    \
-    {"hasattr", (PyCFunction)builtin_hasattr, METH_VARARGS, builtin_hasattr__doc__},
+    {"hasattr", (PyCFunction)builtin_hasattr, METH_FASTCALL, builtin_hasattr__doc__},
 
 static PyObject *
 builtin_hasattr_impl(PyObject *module, PyObject *obj, PyObject *name);
 
 static PyObject *
-builtin_hasattr(PyObject *module, PyObject *args)
+builtin_hasattr(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *obj;
     PyObject *name;
 
-    if (!PyArg_UnpackTuple(args, "hasattr",
+    if (!_PyArg_UnpackStack(args, nargs, "hasattr",
         2, 2,
         &obj, &name)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("hasattr", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_hasattr_impl(module, obj, name);
 
 exit:
@@ -362,25 +378,29 @@ PyDoc_STRVAR(builtin_setattr__doc__,
 "setattr(x, \'y\', v) is equivalent to ``x.y = v\'\'");
 
 #define BUILTIN_SETATTR_METHODDEF    \
-    {"setattr", (PyCFunction)builtin_setattr, METH_VARARGS, builtin_setattr__doc__},
+    {"setattr", (PyCFunction)builtin_setattr, METH_FASTCALL, builtin_setattr__doc__},
 
 static PyObject *
 builtin_setattr_impl(PyObject *module, PyObject *obj, PyObject *name,
                      PyObject *value);
 
 static PyObject *
-builtin_setattr(PyObject *module, PyObject *args)
+builtin_setattr(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *obj;
     PyObject *name;
     PyObject *value;
 
-    if (!PyArg_UnpackTuple(args, "setattr",
+    if (!_PyArg_UnpackStack(args, nargs, "setattr",
         3, 3,
         &obj, &name, &value)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("setattr", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_setattr_impl(module, obj, name, value);
 
 exit:
@@ -396,23 +416,27 @@ PyDoc_STRVAR(builtin_delattr__doc__,
 "delattr(x, \'y\') is equivalent to ``del x.y\'\'");
 
 #define BUILTIN_DELATTR_METHODDEF    \
-    {"delattr", (PyCFunction)builtin_delattr, METH_VARARGS, builtin_delattr__doc__},
+    {"delattr", (PyCFunction)builtin_delattr, METH_FASTCALL, builtin_delattr__doc__},
 
 static PyObject *
 builtin_delattr_impl(PyObject *module, PyObject *obj, PyObject *name);
 
 static PyObject *
-builtin_delattr(PyObject *module, PyObject *args)
+builtin_delattr(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *obj;
     PyObject *name;
 
-    if (!PyArg_UnpackTuple(args, "delattr",
+    if (!_PyArg_UnpackStack(args, nargs, "delattr",
         2, 2,
         &obj, &name)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("delattr", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_delattr_impl(module, obj, name);
 
 exit:
@@ -505,24 +529,28 @@ PyDoc_STRVAR(builtin_pow__doc__,
 "invoked using the three argument form.");
 
 #define BUILTIN_POW_METHODDEF    \
-    {"pow", (PyCFunction)builtin_pow, METH_VARARGS, builtin_pow__doc__},
+    {"pow", (PyCFunction)builtin_pow, METH_FASTCALL, builtin_pow__doc__},
 
 static PyObject *
 builtin_pow_impl(PyObject *module, PyObject *x, PyObject *y, PyObject *z);
 
 static PyObject *
-builtin_pow(PyObject *module, PyObject *args)
+builtin_pow(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *x;
     PyObject *y;
     PyObject *z = Py_None;
 
-    if (!PyArg_UnpackTuple(args, "pow",
+    if (!_PyArg_UnpackStack(args, nargs, "pow",
         2, 3,
         &x, &y, &z)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("pow", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_pow_impl(module, x, y, z);
 
 exit:
@@ -542,22 +570,26 @@ PyDoc_STRVAR(builtin_input__doc__,
 "On *nix systems, readline is used if available.");
 
 #define BUILTIN_INPUT_METHODDEF    \
-    {"input", (PyCFunction)builtin_input, METH_VARARGS, builtin_input__doc__},
+    {"input", (PyCFunction)builtin_input, METH_FASTCALL, builtin_input__doc__},
 
 static PyObject *
 builtin_input_impl(PyObject *module, PyObject *prompt);
 
 static PyObject *
-builtin_input(PyObject *module, PyObject *args)
+builtin_input(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *prompt = NULL;
 
-    if (!PyArg_UnpackTuple(args, "input",
+    if (!_PyArg_UnpackStack(args, nargs, "input",
         0, 1,
         &prompt)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("input", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_input_impl(module, prompt);
 
 exit:
@@ -586,23 +618,27 @@ PyDoc_STRVAR(builtin_sum__doc__,
 "reject non-numeric types.");
 
 #define BUILTIN_SUM_METHODDEF    \
-    {"sum", (PyCFunction)builtin_sum, METH_VARARGS, builtin_sum__doc__},
+    {"sum", (PyCFunction)builtin_sum, METH_FASTCALL, builtin_sum__doc__},
 
 static PyObject *
 builtin_sum_impl(PyObject *module, PyObject *iterable, PyObject *start);
 
 static PyObject *
-builtin_sum(PyObject *module, PyObject *args)
+builtin_sum(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *iterable;
     PyObject *start = NULL;
 
-    if (!PyArg_UnpackTuple(args, "sum",
+    if (!_PyArg_UnpackStack(args, nargs, "sum",
         1, 2,
         &iterable, &start)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("sum", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_sum_impl(module, iterable, start);
 
 exit:
@@ -620,24 +656,28 @@ PyDoc_STRVAR(builtin_isinstance__doc__,
 "or ...`` etc.");
 
 #define BUILTIN_ISINSTANCE_METHODDEF    \
-    {"isinstance", (PyCFunction)builtin_isinstance, METH_VARARGS, builtin_isinstance__doc__},
+    {"isinstance", (PyCFunction)builtin_isinstance, METH_FASTCALL, builtin_isinstance__doc__},
 
 static PyObject *
 builtin_isinstance_impl(PyObject *module, PyObject *obj,
                         PyObject *class_or_tuple);
 
 static PyObject *
-builtin_isinstance(PyObject *module, PyObject *args)
+builtin_isinstance(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *obj;
     PyObject *class_or_tuple;
 
-    if (!PyArg_UnpackTuple(args, "isinstance",
+    if (!_PyArg_UnpackStack(args, nargs, "isinstance",
         2, 2,
         &obj, &class_or_tuple)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("isinstance", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_isinstance_impl(module, obj, class_or_tuple);
 
 exit:
@@ -655,27 +695,31 @@ PyDoc_STRVAR(builtin_issubclass__doc__,
 "or ...`` etc.");
 
 #define BUILTIN_ISSUBCLASS_METHODDEF    \
-    {"issubclass", (PyCFunction)builtin_issubclass, METH_VARARGS, builtin_issubclass__doc__},
+    {"issubclass", (PyCFunction)builtin_issubclass, METH_FASTCALL, builtin_issubclass__doc__},
 
 static PyObject *
 builtin_issubclass_impl(PyObject *module, PyObject *cls,
                         PyObject *class_or_tuple);
 
 static PyObject *
-builtin_issubclass(PyObject *module, PyObject *args)
+builtin_issubclass(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *cls;
     PyObject *class_or_tuple;
 
-    if (!PyArg_UnpackTuple(args, "issubclass",
+    if (!_PyArg_UnpackStack(args, nargs, "issubclass",
         2, 2,
         &cls, &class_or_tuple)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("issubclass", kwnames)) {
+        goto exit;
+    }
     return_value = builtin_issubclass_impl(module, cls, class_or_tuple);
 
 exit:
     return return_value;
 }
-/*[clinic end generated code: output=66818a69d6d23181 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=3234725ef4d8bbf1 input=a9049054013a1b77]*/
diff --git a/Python/clinic/import.c.h b/Python/clinic/import.c.h
index 6ee91200c99..0165b7c4e19 100644
--- a/Python/clinic/import.c.h
+++ b/Python/clinic/import.c.h
@@ -273,23 +273,27 @@ PyDoc_STRVAR(_imp_create_dynamic__doc__,
 "Create an extension module.");
 
 #define _IMP_CREATE_DYNAMIC_METHODDEF    \
-    {"create_dynamic", (PyCFunction)_imp_create_dynamic, METH_VARARGS, _imp_create_dynamic__doc__},
+    {"create_dynamic", (PyCFunction)_imp_create_dynamic, METH_FASTCALL, _imp_create_dynamic__doc__},
 
 static PyObject *
 _imp_create_dynamic_impl(PyObject *module, PyObject *spec, PyObject *file);
 
 static PyObject *
-_imp_create_dynamic(PyObject *module, PyObject *args)
+_imp_create_dynamic(PyObject *module, PyObject **args, Py_ssize_t nargs, PyObject *kwnames)
 {
     PyObject *return_value = NULL;
     PyObject *spec;
     PyObject *file = NULL;
 
-    if (!PyArg_UnpackTuple(args, "create_dynamic",
+    if (!_PyArg_UnpackStack(args, nargs, "create_dynamic",
         1, 2,
         &spec, &file)) {
         goto exit;
     }
+
+    if (!_PyArg_NoStackKeywords("create_dynamic", kwnames)) {
+        goto exit;
+    }
     return_value = _imp_create_dynamic_impl(module, spec, file);
 
 exit:
@@ -365,4 +369,4 @@ exit:
 #ifndef _IMP_EXEC_DYNAMIC_METHODDEF
     #define _IMP_EXEC_DYNAMIC_METHODDEF
 #endif /* !defined(_IMP_EXEC_DYNAMIC_METHODDEF) */
-/*[clinic end generated code: output=5a3f012344950548 input=a9049054013a1b77]*/
+/*[clinic end generated code: output=c1d0e65d04114958 input=a9049054013a1b77]*/