def get_topics(yaml_info):
    ''' Returns the names of all of the topics in the bag, and prints them
        to stdout if requested
    '''
    # Pull out the topic info
    names = []
    # Store all of the topics in a dictionary
    topics = yaml_info['topics']
    for topic in topics:
        names.append(topic['topic'])

    return names
Returns the names of all of the topics in the bag, and prints them
        to stdout if requested