pip install msgpack-python==0.5.6

MessagePack (de)serializer.

Source
Among top 1000 packages on PyPI.
Over 3.8M downloads in the last 90 days.

Commonly used with msgpack-python

Based on how often these packages appear together in public requirements.txt files on GitHub.

zipdep.py

Packaging dependencies into your app

asyncio-nats-client

NATS client for Python Asyncio

plyvel

Plyvel, a fast and feature-rich Python interface to LevelDB

EditorConfig

EditorConfig File Locator and Interpreter for Python

secp256k1

FFI bindings to libsecp256k1

backports.lzma

Backport of Python 3.3's 'lzma' module for XZ/LZMA compressed files.

objgraph

Draws Python object reference graphs with graphviz

bunch

A dot-accessible dictionary (a la JavaScript objects)

pyuv

Python interface for libuv

azure-servicemanagement-legacy

Microsoft Azure Legacy Service Management Client Library for Python

trollius

Deprecated, unmaintained port of the asyncio module (PEP 3156) on Python 2

Twiggy

a Pythonic logger

threadpool

Easy to use object-oriented thread pool framework.

ovh

"Official OVH.com API wrapper"

rethinkdb

Python driver library for the RethinkDB database server.

hyperframe

HTTP/2 framing layer for Python

h2

HTTP/2 State-Machine based protocol implementation

lz4

LZ4 Bindings for Python

iowait

Platform-independent module for I/O completion events

Version usage of msgpack-python

Proportion of downloaded versions in the last 3 months (only versions over 1%).

0.5.6

91.10%

0.4.8

5.85%