############################################################################
# 7.5.8 Slice Objects
############################################################################
cdef extern from "Python.h":
ctypedef void PyObject
# object PySlice_Type
# The type object for slice objects. This is the same as slice and types.SliceType.
bint PySlice_Check(object ob)
# Return true if ob is a slice object; ob must not be NULL.
object PySlice_New(object start, object stop, object 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(object 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
int PySlice_GetIndicesEx(object 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.
