Book Image

Learning Beaglebone Python Programming

Book Image

Learning Beaglebone Python Programming

Overview of this book

Table of Contents (19 chapters)

LED displays

One of the simplest forms of hardware output that we can add to a program is an LED attached to a GPIO pin. We've already blinked LEDs, but not in a way that conveyed any sort of meaningful information; so first things first, we'll need something to communicate to the user. Here's a simple program that uses Internet Message Access Protocol (IMAP) to login to your email account and retrieve the number of unread messages in your inbox. Save it as a new file called, either in Cloud9 or your editor of choice over SSH, filling in the IMAP details for your account, as shown in the following code:

import imaplib

IMAP_host = ""
IMAP_email = "[email protected]"
IMAP_pass = "password"

email = imaplib.IMAP4_SSL(IMAP_host)

def connect():
    email.login(IMAP_email, IMAP_pass)

def disconnect():

def get_num_emails():"INBOX")
    ret, data =, "UNSEEN")
    return len(data[0].split(...