auto save

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.remove("八戒")
+print(students)
 # 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("诺依")
+print(students)
 # 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
-red = ?
-blue = ?
+red = students[:2]
+blue = students[2:]
+print(red)
+print(blue)
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diy2.py

+message='诺亚，周末一起去看漫展吧！'
+length=len(message)
+i=0
+while i<length:
+    element=message[i]
+    print(element)
+    i+=1
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diy3.py

+import random
+key="建行股份世界第一发掘有软件业建设的飞机"
+message="诺依，周末一起去看漫展吧！"
+key_message=''
+for i in message:
+    str1=i
+    str2=random.choice(key)
+    str3=random.choice(key)
+    text=str1+str2+str3
+    key_message=key_message+text
+print(key_message)
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