Python 嵌套

lst = [["张艺谋","冯小刚","陈凯歌"],["李安","王家卫","王晶"],["周杰伦",["abc","alex_wusir",["胡辣汤","c"]],"风扇哥"]]
print(lst[1][1][2])

# 把王晶换成"贾樟柯"
lst[1][2] = "贾樟柯"
print(lst)

#  $$$$$
#降维操作 ["哈哈","hehe","houhou"] 一维 [[1,2,3],[12,4,5],[6,7,8]] 二维
# 数数
lst[2][1][1] = lst[2][1][1].replace("_","$")
print(lst)