列表对象¶
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PyTypeObject
PyList_Type¶ This instance of
PyTypeObjectrepresents the Python list type. This is the same object aslistin the Python layer.
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int
PyList_Check(PyObject *p)¶ 如果 p 是一个列表对象或者是一个列表类型的子类型实例时，返回真。
在 2.2 版更改: Allowed subtypes to be accepted.
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PyObject*
PyList_New(Py_ssize_t len)¶ - Return value: New reference.
Return a new list of length len on success, or NULL on failure.
注解
当 len 大于零时，被返回的列表对象项目被设成
NULL。因此你不能用类似C函数PySequence_SetItem()的抽象API或者用C函数PyList_SetItem()将所有项目设置成真实对象前对Python代码公开这个对象。在 2.5 版更改: This function used an
intfor size. This might require changes in your code for properly supporting 64-bit systems.
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Py_ssize_t
PyList_Size(PyObject *list)¶ 返回 list 中列表对象的长度；这等于在列表对象调用
len(list)。在 2.5 版更改: This function returned an
int. This might require changes in your code for properly supporting 64-bit systems.
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Py_ssize_t
PyList_GET_SIZE(PyObject *list)¶ 宏版本的C函数
PyList_Size()，没有错误检测。在 2.5 版更改: This macro returned an
int. This might require changes in your code for properly supporting 64-bit systems.
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PyObject*
PyList_GetItem(PyObject *list, Py_ssize_t index)¶ - Return value: Borrowed reference.
Return the object at position index in the list pointed to by list. The position must be non-negative; indexing from the end of the list is not supported. If index is out of bounds (<0 or >=len(list)), return NULL and set an
IndexErrorexception.在 2.5 版更改: This function used an
intfor index. This might require changes in your code for properly supporting 64-bit systems.
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PyObject*
PyList_GET_ITEM(PyObject *list, Py_ssize_t i)¶ - Return value: Borrowed reference.
宏版本的C函数
PyList_GetItem()，没有错误检测。在 2.5 版更改: This macro used an
intfor i. This might require changes in your code for properly supporting 64-bit systems.
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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。注解
此函数会“偷走”一个对 item 的引用并丢弃一个对列表中受影响位置上的已有条目的引用。
在 2.5 版更改: This function used an
intfor index. This might require changes in your code for properly supporting 64-bit systems.
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void
PyList_SET_ITEM(PyObject *list, Py_ssize_t i, PyObject *o)¶ 不带错误检测的宏版本
PyList_SetItem()。 这通常只被用于新列表中之前没有内容的位置进行填充。注解
This macro “steals” a reference to item, and, unlike
PyList_SetItem(), does not discard a reference to any item that it being replaced; any reference in list at position i will be leaked.在 2.5 版更改: This macro used an
intfor i. This might require changes in your code for properly supporting 64-bit systems.
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int
PyList_Insert(PyObject *list, Py_ssize_t index, PyObject *item)¶ 将条目 item 插入到列表 list 索引号 index 之前的位置。 如果成功将返回
0；如果不成功则返回-1并设置一个异常。 相当于list.insert(index, item)。在 2.5 版更改: This function used an
intfor index. This might require changes in your code for properly supporting 64-bit systems.
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int
PyList_Append(PyObject *list, PyObject *item)¶ 将对象 item 添加到列表 list 的末尾。 如果成功将返回
0；如果不成功则返回-1并设置一个异常。 相当于list.append(item)。
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PyObject*
PyList_GetSlice(PyObject *list, Py_ssize_t low, Py_ssize_t high)¶ - Return value: New reference.
Return a list of the objects in list containing the objects between low and high. Return NULL and set an exception if unsuccessful. Analogous to
list[low:high]. Indexing from the end of the list is not supported.在 2.5 版更改: This function used an
intfor low and high. This might require changes in your code for properly supporting 64-bit systems.
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int
PyList_SetSlice(PyObject *list, Py_ssize_t low, Py_ssize_t high, PyObject *itemlist)¶ Set the slice of list between low and high to the contents of itemlist. Analogous to
list[low:high] = itemlist. The itemlist may be NULL, indicating the assignment of an empty list (slice deletion). Return0on success,-1on failure. Indexing from the end of the list is not supported.在 2.5 版更改: This function used an
intfor low and high. This might require changes in your code for properly supporting 64-bit systems.