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Now, the PizzaStrore (FactoryPizzaStore) is abstract. The CreatePizza method has been migrated back from the simple factory. In PizzaStroe, the CreatePizza method is now abstract.Only an informal Code Review will relax you and the reviewers. Only when people relax will they behave very truly and sincerely. Remember that Review is only a form, and it is most realistic only when meaningful and constructive suggestions and opinions are obtained through mutual discussions in mutual trust. Otherwise, the relationship between the author and the reviewer will become the relationship between the thief and the police.二十四节气的每一刻都蕴藏中国人洞察天地的智慧，蕴含着生存智慧与生活哲学。是先人立身处世的生活方式，是与自然天人合一的精神追求，是中华民族极具个性的科学和文化遗产。2020年先通过“冬春季”跟大家共同探寻“节气之美”，感悟传统文化的别样生命力。每个节气，邀请不同领域的文化名人前往带有不同节气意境的匠人居所体验其家庭的生活状态，展现当地的独特节气风貌。邀你“住进节气里”，零距离地体验每个节气中的优雅生活。通过节日复兴带动中式美学的复兴。Learning thinking and learning methods are very important, resulting in three situations of confusion and poor harvest: short contact thought comprehensive, incomplete mastery eager to overthrow, insufficient comprehension and rhetoric, and the most important thing in learning is to keep a large period of time and practice deliberately patiently and modestly.But we didn't realize it until the first big mouse emerged from the trench of the position. The big rats under the "earth beam" are only a few that dig shallow holes. Most of the deep digging is simply not visible from the surface, This is what I said just now. If you dig shallow, you can barely hit it. You can't see it deep, There is no way out, At last this thing was dug up and emerged directly from the trench wall. Then don't even shake the soil on your body, Bite at the sight of men, As the number of drillings grows, In the end, there were several times more rats than people in the position. Forming a situation of several besieging a soldier, Seeing the urgency of the situation, But 'the lame man caught up with the uneven road' (this is a folk proverb, meaning to make things worse, the house leaks when it rains at night), The big wasps that were repelled for the first time launched another attack, or from the left and right wings, in your words, this also formed the "open space" to cooperate in the battle. It is very strange that the big wasps did not attack the big rats on the ground at one time, but only stung people. They are obviously "a group" of dogs. Alas, then we will fight too badly. " Zhang Xiaobo said with a long sigh here, and I couldn't help but be surprised. This big mouse can dig out more than 100 meters of passages underground in more than half an hour. How fast is this? That's a speed of more than 30 centimeters per minute. Although it is said that the soil on the southern border is softer and no harder than that in the north, it can dig more than 30 centimeters per minute. This speed is really staggering.Q: How did you start to take part in the Kaggle competition?9-3 User: Create a class named User, which contains the attributes first_name and last_name, as well as several other attributes that the user profile usually stores. Define a method named describe_user () in the class User, which prints a summary of user information; Then define a method called greet_user (), which sends personalized greetings to users.