List(串列)物件¶
-
PyTypeObject
PyList_Type
¶ This instance of
PyTypeObject
represents the Python list type. This is the same object aslist
in the Python layer.
-
int
PyList_Check
(PyObject *p)¶ Return true if p is a list object or an instance of a subtype of the list type.
-
int
PyList_CheckExact
(PyObject *p)¶ Return true if p is a list object, but not an instance of a subtype of the list type.
-
PyObject*
PyList_New
(Py_ssize_t len)¶ - Return value: New reference.
成功时返回一个长度为 len 的新列表,失败时返回
NULL
。備註
If len is greater than zero, the returned list object's items are set to
NULL
. Thus you cannot use abstract API functions such asPySequence_SetItem()
or expose the object to Python code before setting all items to a real object withPyList_SetItem()
.
-
Py_ssize_t
PyList_Size
(PyObject *list)¶ Return the length of the list object in list; this is equivalent to
len(list)
on a list object.
-
Py_ssize_t
PyList_GET_SIZE
(PyObject *list)¶ Macro form of
PyList_Size()
without error checking.
-
PyObject*
PyList_GetItem
(PyObject *list, Py_ssize_t index)¶ - Return value: Borrowed reference.
返回 list 所指向列表中 index 位置上的对象。 位置值必须为非负数;不支持从列表末尾进行索引。 如果 index 超出边界 (<0 or >=len(list)),则返回
NULL
并设置IndexError
异常。
-
PyObject*
PyList_GET_ITEM
(PyObject *list, Py_ssize_t i)¶ - Return value: Borrowed reference.
Macro form of
PyList_GetItem()
without error checking.
-
int
PyList_SetItem
(PyObject *list, Py_ssize_t index, PyObject *item)¶ 将列表中索引为 index 的项设为 item。 成功时返回
0
。 如果 index 超出范围则返回-1
并设定IndexError
异常。備註
This function "steals" a reference to item and discards a reference to an item already in the list at the affected position.
-
void
PyList_SET_ITEM
(PyObject *list, Py_ssize_t i, PyObject *o)¶ Macro form of
PyList_SetItem()
without error checking. This is normally only used to fill in new lists where there is no previous content.備註
This macro "steals" a reference to item, and, unlike
PyList_SetItem()
, does not discard a reference to any item that is being replaced; any reference in list at position i will be leaked.
-
int
PyList_Insert
(PyObject *list, Py_ssize_t index, PyObject *item)¶ Insert the item item into list list in front of index index. Return
0
if successful; return-1
and set an exception if unsuccessful. Analogous tolist.insert(index, item)
.
-
int
PyList_Append
(PyObject *list, PyObject *item)¶ Append the object item at the end of list list. Return
0
if successful; return-1
and set an exception if unsuccessful. Analogous tolist.append(item)
.
-
PyObject*
PyList_GetSlice
(PyObject *list, Py_ssize_t low, Py_ssize_t high)¶ - Return value: New reference.
返回一个对象列表,包含 list 当中位于 low 和 high 之间 的对象。 如果不成功则返回
NULL
并设置异常。 相当于list[low:high]
。 不支持从列表末尾进行索引。
-
int
PyList_SetSlice
(PyObject *list, Py_ssize_t low, Py_ssize_t high, PyObject *itemlist)¶ 将 list 当中 low 与 high 之间的切片设为 itemlist 的内容。 相当于
list[low:high] = itemlist
。 itemlist 可以为NULL
,表示赋值为一个空列表(删除切片)。 成功时返回0
,失败时返回-1
。 这里不支持从列表末尾进行索引。
-
int
PyList_Sort
(PyObject *list)¶ Sort the items of list in place. Return
0
on success,-1
on failure. This is equivalent tolist.sort()
.
-
int
PyList_Reverse
(PyObject *list)¶ Reverse the items of list in place. Return
0
on success,-1
on failure. This is the equivalent oflist.reverse()
.
-
PyObject*
PyList_AsTuple
(PyObject *list)¶ - Return value: New reference.
Return a new tuple object containing the contents of list; equivalent to
tuple(list)
.
-
int
PyList_ClearFreeList
()¶ Clear the free list. Return the total number of freed items.
3.3 版新加入.