python 9.6作業

1，Hello world！ >>> print("hello world") hello world 2，簡單交互 >>> name=input("please input your name:") please input your name:ruican >>> print("{}同學,好好學習，天天向上！".format(name)) ruican同學,好好學習，天天向上！ 3，用戶輸入三

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