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.
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.
Create a memoryview object using
mem
as the underlying buffer.
flags
can be one of
PyBUF_READ
or
PyBUF_WRITE
.
3.3 版新增。
Create a memoryview object wrapping the given buffer structure
view
. For simple byte buffers,
PyMemoryView_FromMemory()
is the preferred function.
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.
Return true if the object
obj
is a memoryview object. It is not currently allowed to create subclasses of
memoryview
. This function always succeeds.
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.
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.
