users = ["alex",0,True,[11,22,33,"老男孩"],[1,['alex','oldboy'],2,3]]
users[0]
users[2]
users[0][2]
users[3] # [11,22,33,"老男孩"]
users[3][-1] # "老男孩"
users[3][-1][1] # '男'
users[3] = 666
users = ["alex",0,True,[11,22,33,"老男孩"],[1,['alex','oldboy'],2,3]]
users[0]
users[2]
users[0][2]
users[3] # [11,22,33,"老男孩"]
users[3][-1] # "老男孩"
users[3][-1][1] # '男'
users[3] = 666