切片对象 ¶

PyTypeObject PySlice_Type ¶

The type object for slice objects. This is the same as slice 在 Python 层。

int PySlice_Check ( PyObject  *ob ) ¶

返回 True 若 ob is a slice object; ob 必须不是 NULL .

PyObject * PySlice_New ( PyObject  *start , PyObject  *stop , PyObject  *step ) ¶

返回值：新引用。

Return a new slice object with the given values. The start , stop ，和 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 ( PyObject  *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.

返回 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.

3.2 版改变： The parameter type for the slice parameter was PySliceObject* before.

int PySlice_GetIndicesEx ( PyObject  *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.

返回 0 on success and -1 on error with exception set.

3.2 版改变： The parameter type for the slice parameter was PySliceObject* before.

省略对象 ¶

PyObject * Py_Ellipsis ¶

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.

内容表

• 切片对象
• 省略对象

上一话题

描述符对象

下一话题

内存视图对象