pyarrow.ResizableBuffer

class pyarrow.ResizableBuffer

Bases: pyarrow.lib.Buffer

A base class for buffers that can be resized.

__init__(*args, **kwargs)

Initialize self. See help(type(self)) for accurate signature.

Methods

__init__(*args, **kwargs)	Initialize self.
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.
is_cpu	Whether the buffer is CPU-accessible.
is_mutable	Whether the buffer is mutable.
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.

equals(self, Buffer other)

Determine if two buffers contain exactly the same data.

Parameters

other (Buffer) –

Returns

are_equal (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.

parent

resize(self, int64_t new_size, shrink_to_fit=False)

Resize buffer to indicated size.

Parameters

• new_size (int) – New size of buffer (padding may be added internally).

• shrink_to_fit (bool, 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

• offset (int, default 0) – Offset from start of buffer to slice.

• length (int, default None) – Length of slice (default is until end of Buffer starting from offset).

Returns

sliced (Buffer) – A logical view over this buffer.

to_pybytes(self)

Return this buffer as a Python bytes object. Memory is copied.

pyarrow.Buffer pyarrow.compress