python第四天tuple

# 元祖只读列表，可切片可循环，有序且可重复，并且儿子不可改，但孙子如果是可改类型则可改
tu = (1,2,3,'张胜男','李四','张胜男',['香蕉','苹果','橘子'],('12',3,4))
print(tu[-2])
print(tu[0:6])
# tu[0] = 1
# print(tu)
tu[-2][-1] = '三上优雅'
print(tu)
print(tu.count('张胜男'))
print(tu.index('张胜男'))
print(len(tu),type(tu))