list=[<div class="s-gold-supplier-year-icon">7<span class="unit">YRS </span></div>, <div class="s-gold-supplier-year-icon">2<span class="unit">YRS </span></div>]
如果我只想取出列表中的数字和YRS，并且组合成7YRS和2YRS这样的并导出到文件里，该怎么写呀？列表很长