2、元祖的初识及索引切片

#3元祖的初识及索引切片
# 元祖: 只读列表，不能增删改，只能查询
# tu = (11, 22, 33, 44, 55)
#索引，切片，步长
# print(tu[0])
# print(tu[:3:2])
# for i in tu:
#     print(i)
# index  len  count
# tu1 = ('wusir', 'alex', [22, 44, 'taibai'],)
# tu1[-1].append('女神')
# print(tu1)
# l1 = [22,33]
# l1.append(tu1)
# # print(l1)
# l1.clear()
# print(l1)
# del tu1
# print(tu1)
# l2 = [1,('wusir', 'alex', [22, 44, 'taibai'],)]
# l2.clear()
# print(l2)