tweetbot.py

import datetime
import random
import Twython
from twisted.internet import task
from twisted.internet import reactor

TIMEOUT = datetime.timedelta(hours=1).seconds

twitter = Twython("YOUR API KEY",
                  "YOUR API SECRET",
                  "YOUR ACCESS TOKEN",
                  "YOUR ACCESS TOKEN SECRET")

items = [
    "To borrow Money on the credit of the United States;",
    "To constitute Tribunals inferior to the supreme Court;",
    "To provide and maintain a Navy;",
]


def reservoir(iterator):
    """Select item from iterator.

    Reservoir algorithm from
    http://stackoverflow.com/a/3540315/250241/
    """
    line = next(iterator)
    for num, item in enumerate(iterator):
        if random.randrange(num + 2):
            continue
        line = item
    return line


def tweet():
    """Update Twitter status."""

    status = reservoir(iter(items))
    twitter.update_status(status=status)


if __name__ == '__main__':
    loop = task.LoopingCall(tweet)
    loop.start(TIMEOUT)
    reactor.run()