筆記：
筆記1：https://zhuanlan.zhihu.com/p/29452562
筆記2:https://zhuanlan.zhihu.com/p/31582406
筆記3:https://zhuanlan.zhihu.com/p/31843146
作業(yè)：
1.L = [['Apple','Banana','Pear'],['Java','Python','Ruby'],['Amy','Baby','Lisa']
請分別打印出Apple, Python, Lisa
2.有字典dic = {"k1":"v1","k2":"v2","k3":"v3"},實現(xiàn)以下功能:
(1)遍歷字典dic中所有的key；
(2)遍歷字典dic中所有的value青自；
(3)循環(huán)遍歷字典dic中所有的key和value；
(4)添加個鍵值對"k4",V4",輸出添加后的字典dic井氢；
(5)刪除字典dic中的鍵值對"k1","V1",并輸出刪除后的字典dic;
(6)有字典dic2 = {"k1":"v111","a":"b"}通過一行操作使dic2 = {"k1":"v111","k2":"v2","k3":"v3","k4":"v4","a":"b"}
3.去除列表中的重復(fù)元素，L=['b', 'c', 'd', 'c', 'b', 'a', 'a']
4.合并有序列表（尾遞歸）月腋，L1=[1,3,5,7,9]指郁，L2=[2,4,6,8]
