You can register a whatsapp client with the yowsup-cli
from whatsapp import Client
phone_to = '31641371199'
client = Client(login='3161516888', password='secretpasswordbase64')
client.send_message(phone_to, 'Hello Lola')
client.send_media(phone_to, path='/Users/tax/Desktop/logo.jpg')$ pip install pywhatsapp