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Use Python for data analysis: This book is a detailed version of Python's pandas package. Learn this to master some basic pandas commands. However, this is not the point, because pandas is too slow to produce a large amount of data and may collapse (I don't know if there is any improvement now-!) The point is, through studying this book, I feel a little about the data operation and am familiar with the basic data operation process. All the operations in this book can be replaced by native Python, and Pandas package is not needed. Finding feelings is very important.(2) OvR众人坐车逛了几条街，买了些杂七杂八的东西，然后就往德胜路去了。徐文长更是惊讶不已，在个人实力的巨大落差下，任何战术都是没有效果的，两百人是对付不了他们的，要两千人。**Decoctum SufferingUntil his father died, Li Lei did not have a chance to talk with his father about his regrets in his life, his unfulfilled wishes and his funeral. Li Lei is not very good at expressing his heart. He should think twice before speaking. He and his father also seldom communicate, and they will not and do not understand how to cut into deeper topics at once.可是网络小说的影响力毕竟有限，每当他向朋友说起网络小说，那些朋友几乎都是一脸茫然。