HOW TO USE
one-shot pack & unpack
Use packb for packing and unpackb for unpacking. msgpack provides dumps and loads as alias for compatibility with json and pickle.
pack and dump packs to file-like object. unpack and load unpacks from file-like object.
>>> import msgpack >>> msgpack.packb([1, 2, 3]) '\x93\x01\x02\x03' >>> msgpack.unpackb(_) (1, 2, 3)
unpack unpacks msgpack’s array to Python’s tuple. To unpack it to list, Use use_list option.
>>> msgpack.unpackb(b'\x93\x01\x02\x03', use_list=True) [1, 2, 3]
Read docstring for other options.
Unpacker is “streaming unpacker”. It unpacks multiple objects from one stream.
import msgpack from io import BytesIO buf = BytesIO() for i in range(100): buf.write(msgpack.packb(range(i))) buf.seek(0) unpacker = msgpack.Unpacker() while True: data = buf.read(4) if not data: break unpacker.seed(buf.read(16)) for unpacked in unpacker: print unpacked
You can use pip or easy_install to install msgpack:
$ easy_install msgpack-python or $ pip install msgpack-python
msgpack provides some binary distribution for Windows. You can install msgpack without compiler with them.
When you can’t use binary distribution, you need to install Visual Studio or Windows SDK on Windows. (NOTE: Visual C++ Express 2010 doesn’t support amd64. Windows SDK is recommanded way to build amd64 msgpack without any fee.)
MessagePack uses nosetest for testing. Run test with following command:
$ nosetests test
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