Step 1: Creat an App at Your Twitter Account

Go to your twitter account. You'll need the following parameters to make your Rasp Pi Tweet, that you'll get from this app

Consumer Key (API key)
Consumer Secret (API Secret)
Access Token
Access Token Secret

Step 2: Insert All Informations and Create an App - Fill the Form

Step 3:

Access Keys and Access Tokens tab in your app, that you just created.

Get all the tokens and create a file in Raspberry Pi, inside your working folder, called keys.py with all your information in it.

consumer_key = "aaaaaaaaa"
consumer_secret = "bbbbbbbbbbb"
access_token = "cccccccccc"
access_token_secret = "dddddddddd"

Step 4: Install Twython in Your Raspberry Pi

Open a terminal in Raspberry Pi, choose a working folder and run the following commands to install Twython, a python package that is required for this experiment.

sudo apt-get update sudo apt-get upgrade
sudo apt-get install python-setuptools
sudo easy_install pip
sudo pip install twython 
sudo pip install requests 
sudo pip install requests-oauthlib

Step 5:

Open a file and your working directory in Pi and rename it to twitter.py.

import sys

from twython import Twython
from keys import (
        consumer_key,
        consumer_secret,
        access_token,
        access_token_secret
)
twitter = Twython(
        consumer_key,
        consumer_secret,
        access_token,
        access_token_secret
)
message = "Meu primeiro tweet - a conta do tpfslima foi invadida poruma plaquinha Raspberry Pi bem espertinha!"
twitter.update_status(status=message)print("Sua mensagem foi twittada com sucesso: %s " % message)

Save it and run it using