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diy1.py

 students = ["悟空", "小贝", "八戒", "波奇"]
 
 # 八戒因为要回老家，转学了，请将八戒从班级列表名单中删除
-
+students.pop(2)
 # 班上来了一个新同学，名叫"诺依"，请将"诺依"加入到班级名单里面
-
+students.append("诺伊")
 # 班上准备开始辩论赛，分为红（red）、蓝(blue)组，
 # 请用切片将班级列表的前2名加入到红组，后2名加入到蓝组
-
-students.pop(2)
-students.append("诺伊")
-print(students)
-red_team = students[0:2]
+red_team = students[:2]
 blue_team = students[-2:]
 print(red_team)
 print(blue_team)
@@ -18,3 +14,5 @@ print(blue_team)
 
 
 
+
+

diy2.py

 message = "诺依，周末一起去看动漫展吧！"
 # 请对message进行遍历，取出所有元素
+# i = 0
+# while i < len(message):
+#     ele = message[i]
+#     print(ele)
+#     i+=1
 for i in message:
     print(i)
+
     
-i=0
-while i < len(message):
-    e = message[i]
-    print(e)
-    i+=1
+
 
 
 
@@ -51,3 +53,4 @@ message = "诺依，周末一起去看动漫展吧！"
 
 
 
+

diy3.py

 import random
 # 私钥
-key = "abcdefgh使用编程实现位移替换加密，制作密码机关真是太好玩了哈哈！"
+key = input("")
 # 要加密语句
 message = "诺依，周末一起去看动漫展吧！"
+noice="iwuergfbdjgaekyt akhg "
+#一次加密
 key_mes = ""
-noi_mes = "4903uythiegurqmvy8gh4urtshgs2345344"
 for i in message:
-    str1 = i
-    str2 = random.choice(key)
-    str3 = random.choice(key)
-    text = str1+str2+str3
+    s1 = i
+    s2 = random.choice(key)
+    s3 = random.choice(key)
+    text = s1+s2+s3
     key_mes = key_mes+text
 print(key_mes)
 
-#转化为列表
+#二次加密，转化为列表
 list_mes = list(key_mes)
-
-index = random.randint(0,len(key_mes))
 #列表的插入
-list_mes.insert(index,noi_mes)
-# print(list_mes)
-#拼接为字符串
+#随机加入
+index = random.randint(0,len(list_mes))
+list_mes.insert(index,noice)
+
+#再拼接为字符串
 res_mes = "".join(list_mes)
 print(res_mes)
 
@@ -33,4 +34,7 @@ print(res_mes)
 
 
 
+
+
+
     
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