def METHOD_NAME():
    """return caller's stack"""
    import traceback
    tb = traceback.extract_stack()
    # strip itself and the caller from the output
    tb = tb[:-2]
    result = []
    for back in tb:
        # (filename, line number, function name, text)
        key = back[:3]
        result.append('%s:%d(%s)' % func_shorten(key))
    return result