小甲鱼python视频弟十一讲（课后习题）

1.修改列表里的值

list1 = [1,2,[2,3,7,[4,'i love you']],3,4,56,]
list1[1] = 1
print(list1)
list1[2][3][1] = '?'
print(list1)

2.列表的排序（sort）

list2 = [1,3,6,2,8,4,9,7]
list2.sort()
print(list2)

3.列表的逆序排序（sort  reverse）

list3 = [1,9,4,7,2,8,5,3,6]
list3.sort()
list3.reverse()
print(list3)

4.copy与clear的用法

list4 = [1,2,3,4,5,6,7,8]
list4.copy()
print(list4)
list4.clear()
print(list4)

5.列表的匹配

list1 = ['1.a','2.b','3.c','4.d']
list2 = ['1.I','2.you','3.he/she','4,it']
list3 = [name + ':' + slame[2:]for name in list1 for slame in list2 if slame[0] ==name[0]]
for each in list3:
    print(each)

 6.列表推倒式[有关A的表达式for A in B]

list1 = [x**2 for x in range(10)]
print(list1)
list1 = []
for x in range(10):
    list1.append(x**2)
print(list1)