内存视图对象 ¶

A memoryview object exposes the C level 缓冲接口 as a Python object which can then be passed around like any other object.

PyObject * PyMemoryView_FromObject ( PyObject * obj ) ¶: 返回值：新引用。 属于稳定 ABI (应用程序二进制接口) .
Create a memoryview object from an object that provides the buffer interface. If obj supports writable buffer exports, the memoryview object will be read/write, otherwise it may be either read-only or read/write at the discretion of the exporter.

PyBUF_READ ¶: Flag to request a readonly buffer.

PyBUF_WRITE ¶: Flag to request a writable buffer.

PyObject * PyMemoryView_FromMemory ( char * mem , Py_ssize_t size , int flags ) ¶

返回值：新引用。 属于稳定 ABI (应用程序二进制接口) since version 3.7.

Create a memoryview object using mem as the underlying buffer. flags can be one of PyBUF_READ or PyBUF_WRITE .

Added in version 3.3.

PyObject * PyMemoryView_FromBuffer ( const Py_buffer * view ) ¶: 返回值：新引用。 属于稳定 ABI (应用程序二进制接口) since version 3.11.
Create a memoryview object wrapping the given buffer structure view . For simple byte buffers, PyMemoryView_FromMemory() is the preferred function.

PyObject * PyMemoryView_GetContiguous ( PyObject * obj , int buffertype , char order ) ¶

返回值：新引用。 属于稳定 ABI (应用程序二进制接口) .

Create a memoryview object to a contiguous chunk of memory (in either ‘C’ or ‘F’ortran order ) from an object that defines the buffer interface. If memory is contiguous, the memoryview object points to the original memory. Otherwise, a copy is made and the memoryview points to a new bytes object.

buffertype can be one of PyBUF_READ or PyBUF_WRITE .

int PyMemoryView_Check ( PyObject * obj ) ¶: Return true if the object obj is a memoryview object. It is not currently allowed to create subclasses of memoryview . This function always succeeds.

Py_buffer * PyMemoryView_GET_BUFFER ( PyObject * mview ) ¶: Return a pointer to the memoryview’s private copy of the exporter’s buffer. mview must be a memoryview instance; this macro doesn’t check its type, you must do it yourself or you will risk crashes.

PyObject * PyMemoryView_GET_BASE ( PyObject * mview ) ¶: Return either a pointer to the exporting object that the memoryview is based on or NULL if the memoryview has been created by one of the functions PyMemoryView_FromMemory() or PyMemoryView_FromBuffer() . mview must be a memoryview instance.

内存视图对象 ¶

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