def display_body(body_list):
    """
    Sets the body for the message to be displayed with display()\n
    The body needs to be a list with each element of the list being a line.
    """
    global body
    if type(body_list) == type(['hey', 'hey']):
        body = body_list
        return body
    elif type(body_list) == type('Hey hey'):
        body = [body_list]
        return body
    else:
        return f'Error: non supported argument type {type(body_list)}'