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diy3.py

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