auto save

1.py

+import random
+key="信息加密好酷呀！"
+str=random.choice(key)
+print(str)
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diy3.py

 message = "诺依，周末一起去看动漫展吧！"
-
+length=len(message)+1
 # 请使用索引的知识，取出message所有元素（不用遍历的方式）
-i=0
-for i in message:
-    print(i) 
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+
+for i in range(length):
+    print(message[i])
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