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Create multiple instances representing different users and call the above two methods for each instance.可是一旦公布，军心会不会立即大乱呢？吕雉对此很是担心。Does the code contain cross-descriptions or data dictionaries to describe how the program accesses variables and constantsUse 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.Take 'Market Insight', one of BLM's major modules, for example, which is also what everyone understands as' Market Analysis and Evaluation '. Its use in formulating company strategy and product line strategy is completely different, which is related to the different levels of concern of company strategy and business strategy. Corporate strategy focuses on which businesses to choose or exit, What is the priority development order of each business and how to formulate the business development strategy at the company level? Therefore, when analyzing the market opportunities at the company level, the focus is to analyze the attraction and competitiveness of the industry environment in which each business is located, and to analyze the strategic positioning of each business and the business combination strategy that the company should adopt. The business strategy focuses on which target market segments should the business develop in? How to develop? What measures have been taken to promote development? Therefore, when analyzing the market opportunities at the business level, it is necessary to subdivide the market of the business, analyze the attraction and competitiveness of each subdivision market respectively, and then make clear which subdivision market the company should choose and the combination strategy of each subdivision market through strategic positioning of each subdivision market. In order to succeed in the market segment, the 'market insight' needs to further analyze the pain point needs of the main competitors and target customer groups in the market segment, but these analyses are not the key content in the 'market insight' at the company level.