Streams and File Access

Factory Functions

These factory functions are the recommended way to create a Arrow stream. They accept various kinds of sources, such as in-memory buffers or on-disk files.

input_stream(source[, compression, buffer_size])	Create an Arrow input stream.
output_stream(source[, compression, buffer_size])	Create an Arrow output stream.
memory_map(path[, mode])	Open memory map at file path.
create_memory_map(path, size)	Create a file of the given size and memory-map it.

Stream Classes

NativeFile	The base class for all Arrow streams.
OSFile	A stream backed by a regular file descriptor.
PythonFile	A stream backed by a Python file object.
BufferReader(obj)	Zero-copy reader from objects convertible to Arrow buffer.
BufferOutputStream	An output stream that writes to a resizable buffer.
FixedSizeBufferWriter	A stream writing to a Arrow buffer.
MemoryMappedFile	A stream that represents a memory-mapped file.
CompressedInputStream(stream, ...)	An input stream wrapper which decompresses data on the fly.
CompressedOutputStream(stream, ...)	An output stream wrapper which compresses data on the fly.

File Systems

See Filesystems.