Python第一次打卡

笔记：

笔记1：https://zhuanlan.zhihu.com/p/29452562

笔记2:https://zhuanlan.zhihu.com/p/31582406

笔记3:https://zhuanlan.zhihu.com/p/31843146

作业：

1.L = [['Apple','Banana','Pear'],['Java','Python','Ruby'],['Amy','Baby','Lisa']

请分别打印出Apple, Python, Lisa

2.有字典dic = {"k1":"v1","k2":"v2","k3":"v3"},实现以下功能:

(1)遍历字典dic中所有的key；

(2)遍历字典dic中所有的value；

(3)循环遍历字典dic中所有的key和value；

(4)添加个键值对"k4",V4",输出添加后的字典dic；

(5)删除字典dic中的键值对"k1","V1",并输出删除后的字典dic;

(6)有字典dic2 = {"k1":"v111","a":"b"}通过一行操作使dic2 = {"k1":"v111","k2":"v2","k3":"v3","k4":"v4","a":"b"}

3.去除列表中的重复元素，L=['b', 'c', 'd', 'c', 'b', 'a', 'a']

4.合并有序列表（尾递归），L1=[1,3,5,7,9]，L2=[2,4,6,8]