Print statistics to the terminal

def output_to_terminal(sources):
    """Print statistics to the terminal"""
    results = OrderedDict()
    for source in sources:
        if source.get_is_available():
            source.update()
            results.update(source.get_summary())
    for key, value in results.items():
        sys.stdout.write(str(key) + ": " + str(value) + ", ")
    sys.stdout.write("\n")
    sys.exit()