<p>我有一个垃圾短信的数据集,它的数据类型是:</p>
<p><code>pyspark.rdd.PipelinedRDD</code></p>
<p>{cd2>当}得到时:</p>
<p><code>[["Free entry in 2 a wkly comp to win FA Cup final tkts 21st May 2005. Text FA to 87121 to receive entry question(std txt rate)T&C's apply 08452810075over18's"],
['WINNER!! As a valued network customer you have been selected to receivea £900 prize reward! To claim call 09061701461. Claim code KL341. Valid 12 hours only.'],
['Had your mobile 11 months or more? U R entitled to Update to the latest colour mobiles with camera for Free! Call The Mobile Update Co FREE on 08002986030']]</code></p>
<p>如您所见,它内有括号以分隔列表中的每个元素。我怎样才能去掉那些括号?我试过很多方法把它弄平,但似乎都不管用。在</p>