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Yowsup is a python library that enables you build application which use WhatsApp service. Yowsup has been used to create an unofficial WhatsApp client Nokia N9 through the Wazapp project which was in use by 200K + users as well as another fully featured unofficial client for Blackberry 10

Here is what you need to know about WhatsApps using Yowsup 2.0 to get started: (Or quickly jump to installation):

• The new architecture
• Create a sample app
• yowsup-cli 2.0
• Yowsup development, debugging, maintainance and sanity

(Updated Jan 12, 2015)

• Requires python2.6+, or python3.0 +
• Required python packages: python-dateutil,
• Required python packages for end-to-end encryption: protobuf, pycrypto, python-axolotl-curve25519
• Required python packages for yowsup-cli: argparse, readline (or pyreadline for windows), pillow (for sending images)

Install using setup.py to pull all python dependencies, or using pip:

pip install yowsup2

You need to have installed python headers (from probably python-dev package) and ncurses-dev, then run

python setup.py install

Because of a bug with python-dateutil package you might get permission error for some dateutil file called requires.txt when you use yowsup (see this bug report) to fix you'll need to chmod 644 that file.

python setup.py install

Administrators privileges might be required, if so then run with 'sudo'

• Install mingw compiler
• Add mingw to your PATH
• In PYTHONPATH\Lib\distutils create a file called distutils.cfg and add these lines:

[build]
compiler=mingw32

• Install gcc: mingw-get.exe install gcc
• Install zlib
• python setup.py install

If pycrypto fails to install with some "chmod error". You can install it separately using something like easy_install http://www.voidspace.org.uk/downloads/pycrypto26/pycrypto-2.6.win32-py2.7.exe

or for python3 from:

https://github.com/axper/python3-pycrypto-windows-installer

and then rerun the install command again

Special thanks to:

• CODeRUS
• mgp25
• SikiFn
• 0xTryCatch
• shirioko

and everyone else on the WhatsAPI project for their contributions to yowsup and the amazing effort they put into WhatsAPI, the PHP WhatsApp library

Special thanks goes to all other people who use and contribute to the library as well.

Please read this if you'd like to contribute to yowsup 2.0

Thanks!

As of January 1, 2015 yowsup is licensed under the GPLv3+: http://www.gnu.org/licenses/gpl-3.0.html.