Python and Excel are both commonly used for data processing, so passing data back and forth and handling computations between them is unavoidable. This article mainly introduces the Python-Excel family of libraries, and how to use the xlrd and xlwt libraries. 1. Common Libraries xlwings, openpyxl, pandas, win32com, xlsxwriter, DataNitro,

1. Economy World Bank Gapminder Economic, health, and social statistics covered by the World Health Organization and the World Bank CIA, The World Factbook Contains information on history, population, economy, government, infrastructure, and military affairs for 267 countries National Bureau of Statistics of China latest macroeconomic data Ministry of Industry and Information Technology A good deal of data is published here, especially data related to industrial operations and informatization

The platform currently includes multiple subsystems and multiple versions, and all versions use the same operations system. To make it easy for users to use multiple versions, we need to bind their QQ and WeChat accounts. In addition, to minimize the chance that a failure in some login system leaves

1. Features of jQuery jQuery eliminates browser compatibility issues Traversing the DOM tree and selecting elements A large plugin library A utility function library, such as $.type(), $.extent(), and so on The core function of jQuery usually refers to a factory object, that is, the jQuery() function, or its more commonly used alias, the $() function.

1. Application Scenarios Control the program’s runtime flow through a configuration file. What a configuration file usually holds is a string, not an object. When debugging a program, inspect all the attribute values of an object. Dynamic module import. For the first scenario, reflection is the widely adopted approach. Many