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/zlibmodule.c b/Modules/zlibmodule.c
index 575dbd2d59..59fc620930 100644
--- a/Modules/zlibmodule.c
+++ b/Modules/zlibmodule.c
@@ -202,7 +202,7 @@ zlib_compress(PyModuleDef *module, PyObject *args)
     int group_right_1 = 0;
     int level = 0;
 
-    switch (PyTuple_Size(args)) {
+    switch (PyTuple_GET_SIZE(args)) {
         case 1:
             if (!PyArg_ParseTuple(args, "y*:compress", &bytes))
                 return NULL;
@@ -227,7 +227,7 @@ zlib_compress(PyModuleDef *module, PyObject *args)
 
 static PyObject *
 zlib_compress_impl(PyModuleDef *module, Py_buffer *bytes, int group_right_1, int level)
-/*[clinic end generated code: checksum=2c59af563a4595c5ecea4011701f482ae350aa5f]*/
+/*[clinic end generated code: checksum=66c4d16d0b8b9dd423648d9ef00d6a89d3363665]*/
 {
     PyObject *ReturnVal = NULL;
     Byte *input, *output = NULL;