PyTypeObject PySlice_Type
The type object for slice objects. This is the same as slice and
types.SliceType.
int PySlice_Check(PyObject *ob)
Return true if ob is a slice object; ob must not be NULL.
PyObject* PySlice_New(PyObject *start, PyObject *stop, PyObject *step)
Return value: New reference.Return a new slice object with the given values. The start, stop, and
step parameters are used as the values of the slice object attributes of
the same names. Any of the values may be NULL, in which case the
None will be used for the corresponding attribute. Return NULL if
the new object could not be allocated.
int PySlice_GetIndices(PySliceObject *slice, Py_ssize_t length, Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step)
Retrieve the start, stop and step indices from the slice object slice, assuming a sequence of length length. Treats indices greater than length as errors.
Returns 0 on success and -1 on error with no exception set (unless one of
the indices was not None and failed to be converted to an integer,
in which case -1 is returned with an exception set).
You probably do not want to use this function. If you want to use slice
objects in versions of Python prior to 2.3, you would probably do well to
incorporate the source of PySlice_GetIndicesEx(), suitably renamed,
in the source of your extension.
Changed in version 2.5: This function used an int type for length and an
int * type for start, stop, and step. This might require
changes in your code for properly supporting 64-bit systems.
int PySlice_GetIndicesEx(PySliceObject *slice, Py_ssize_t length, Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step, Py_ssize_t *slicelength)
Usable replacement for PySlice_GetIndices(). Retrieve the start,
stop, and step indices from the slice object slice assuming a sequence of
length length, and store the length of the slice in slicelength. Out
of bounds indices are clipped in a manner consistent with the handling of
normal slices.
Returns 0 on success and -1 on error with exception set.
New in version 2.3.
Changed in version 2.5: This function used an int type for length and an
int * type for start, stop, step, and slicelength. This
might require changes in your code for properly supporting 64-bit
systems.
PyObject *Py_Ellipsis
The Python Ellipsis object. This object has no methods. It needs to be
treated just like any other object with respect to reference counts. Like
Py_None it is a singleton object.