At the end of the source file, we have the following code:
# Main entry point
if __name__ == '__main__':
signal.signal(signal.SIGINT, signal_handler) # Capture CTRL + C
print_instructions() # (18)
# Initialize LED from last dweet.
latest_dweet = get_latest_dweet() # (19)
if (latest_dweet):
process_dweet(latest_dweet)
print('Waiting for dweets. Press Control+C to exit.')
#Only use one of the following.
#stream_dweets_forever() # Stream dweets real-time.
poll_dweets_forever() # Get dweets by polling. # (20)
On line (8), print_instructions() is responsible for printing the sweet URLs to the Terminal, while on line (19), we see a call to get_latest_dweet(). This call initializes our LED to the last dweeted state when the program starts. Finally, on line (20), we start polling the dweet.io service to access the latest dweets...
