I can't get past this. I've tried almost everything and something is always amiss every single time. Below is the code which I've tried most recently and the following error show up>>>>
File "python", line 10, in <module
File "python", line 6, in join_strings
AttributeError: 'str' object has no attribute 'append'
def join_strings(words): result = "" for i in range(len(words)): words.append(result) return result print joint_strings(n)