Issue #20226: Major improvements to Argument Clinic.

* You may now specify an expression as the default value for a
  parameter!  Example: "sys.maxsize - 1".  This support is
  intentionally quite limited; you may only use values that
  can be represented as static C values.
* Removed "doc_default", simplified support for "c_default"
  and "py_default".  (I'm not sure we still even need
  "py_default", but I'm leaving it in for now in case a
  use presents itself.)
* Parameter lines support a trailing '\\' as a line
  continuation character, allowing you to break up long lines.
* The argument parsing code generated when supporting optional
  groups now uses PyTuple_GET_SIZE instead of PyTuple_GetSize,
  leading to a 850% speedup in parsing.  (Just kidding, this
  is an unmeasurable difference.)
* A bugfix for the recent regression where the generated
  prototype from pydoc for builtins would be littered with
  unreadable "=<object ...>"" default values for parameters
  that had no default value.
* Converted some asserts into proper failure messages.
* Many doc improvements and fixes.

1 files changed, 2 insertions, 2 deletions

diff --git a/Modules/_cursesmodule.c b/Modules/_cursesmodule.c
index 2a70337..9eaf09c 100644
--- a/Modules/_cursesmodule.c
+++ b/Modules/_cursesmodule.c
@@ -618,7 +618,7 @@ curses_window_addch(PyObject *self, PyObject *args)
     int group_right_1 = 0;
     long attr = 0;
 
-    switch (PyTuple_Size(args)) {
+    switch (PyTuple_GET_SIZE(args)) {
         case 1:
             if (!PyArg_ParseTuple(args, "O:addch", &ch))
                 return NULL;
@@ -650,7 +650,7 @@ curses_window_addch(PyObject *self, PyObject *args)
 
 static PyObject *
 curses_window_addch_impl(PyObject *self, int group_left_1, int x, int y, PyObject *ch, int group_right_1, long attr)
-/*[clinic end generated code: checksum=44ed958b891cde91205e584c766e048f3999714f]*/
+/*[clinic end generated code: checksum=b073327add8197b6ba7fb96c87062422c8312954]*/
 {
     PyCursesWindowObject *cwself = (PyCursesWindowObject *)self;
     int coordinates_group = group_left_1;