pyarrow.ResizableBuffer#

class pyarrow.ResizableBuffer#

Bases: Buffer

A base class for buffers that can be resized.

__init__(*args, **kwargs)#

Methods

`__init__`(args, *kwargs)
`equals`(self, Buffer other)	Determine if two buffers contain exactly the same data.
`hex`(self)	Compute hexadecimal representation of the buffer.
`resize`(self, int64_t new_size[, shrink_to_fit])	Resize buffer to indicated size.
`slice`(self[, offset, length])	Slice this buffer.
`to_pybytes`(self)	Return this buffer as a Python bytes object.

Attributes

`address`	The buffer's address, as an integer.
`device`	The device where the buffer resides.
`device_type`	The device type where the buffer resides.
`is_cpu`	Whether the buffer is CPU-accessible.
`is_mutable`	Whether the buffer is mutable.
`memory_manager`	The memory manager associated with the buffer.
`parent`
`size`	The buffer size in bytes.

address#

The buffer’s address, as an integer.

The returned address may point to CPU or device memory. Use is_cpu() to disambiguate.

device#

The device where the buffer resides.

Returns:

Device

device_type#

The device type where the buffer resides.

Returns:

DeviceAllocationType

equals(self, Buffer other)#

Determine if two buffers contain exactly the same data.

Parameters:

otherBuffer

Returns:

are_equalbool: True if buffer contents and size are equal

hex(self)#

Compute hexadecimal representation of the buffer.

Returns:

: bytes

is_cpu#: Whether the buffer is CPU-accessible.

is_mutable#: Whether the buffer is mutable.

memory_manager#

The memory manager associated with the buffer.

Returns:

MemoryManager

parent#

resize(self, int64_t new_size, shrink_to_fit=False)#

Resize buffer to indicated size.

Parameters:

new_sizeint: New size of buffer (padding may be added internally).
shrink_to_fitbool, default False: If this is true, the buffer is shrunk when new_size is less than the current size. If this is false, the buffer is never shrunk.

size#: The buffer size in bytes.

slice(self, offset=0, length=None)#

Slice this buffer. Memory is not copied.

You can also use the Python slice notation buffer[start:stop].

Parameters:

offsetint, default 0: Offset from start of buffer to slice.
lengthint, default None: Length of slice (default is until end of Buffer starting from offset).

Returns:

slicedBuffer: A logical view over this buffer.

to_pybytes(self)#: Return this buffer as a Python bytes object. Memory is copied.