07 字符串，元祖，字典如何转换成列表

s1 = "李露"
l1 = list(s1)
print(l1)

s2 = ("alex","laonanhai","seven")
l2 = list(s2)
print(l2)

s3 = {"k1":"alex", "k2":"seven"}
l3 = list(s3.items())
print(l3)