请使用代码实现:利用下划线将列表的每个元素拼接成字符串,li=['alex', 'eric', 'rain']
li = ["alex", "eric", "rain"] b = li[0] for i in li[1:]: b += "_" + i print(b)
请使用代码实现:利用下划线将列表的每个元素拼接成字符串,li=['alex', 'eric', 'rain']
li = ["alex", "eric", "rain"] b = li[0] for i in li[1:]: b += "_" + i print(b)