Programming VIP

preface This blog will talk about the flow control statements in Python language. In high school, we have learned program flow problems in mathematics. To achieve a goal, we often need to go step by step from the beginning, sometimes in sequence, sometimes in choice, and sometimes in cycle. Circulation and selection control the whole pro ...

2.23 Summary - dictionaries, assignments 1. Cognitive Dictionary (dict) Is a container data type; Take {} as the flag of the container, in which multiple key value pairs are separated by commas: {key 1: value 1, key 2: value 2, key 3: value 3,...} Key value pair: key value The dictionary is changeable (support addition, deletion and modific ...

Definition from Wikipedia The travelling salesman problem (also called the travelling salesperson problem or TSP) asks the following question: "Given a list of cities and the distances between each pair of cities, what is the shortest possible route that visits each city exactly once and returns to the origin city?" Recently, in order to ...

Author: Han Xinzi@ShowMeAITutorial address: http://www.showmeai.tech/tuto...Article address: http://www.showmeai.tech/article-detail/90Notice: All Rights Reserved. Please contact the platform and the author for reprint and indicate the sourcePython date and timeIn the development process of python, we often have to deal with time type data. Pyt ...

Author: Han Xinzi@ShowMeAITutorial address: http://www.showmeai.tech/tuto...Article address: http://www.showmeai.tech/article-detail/87Notice: All Rights Reserved. Please contact the platform and the author for reprint and indicate the source1. Python 3 errors and exceptionsIn the actual programming process, we often see some error messages, an ...

Author: Han Xinzi@ShowMeAITutorial address: http://www.showmeai.tech/tuto...Article address: http://www.showmeai.tech/article-detail/86Notice: All Rights Reserved. Please contact the platform and the author for reprint and indicate the source1.Python file directory operation and OS moduleIn our actual development, we often need to read, travers ...

Today's test 1. Simply describe the storage of a variable x=10 in the heap area of the stack area in memory. Stack area: storage is the corresponding relationship between the variable name and the memory address, so it can be simply understood as: variable name is stored in the memory address heap area: it stores the variable value Emphasi ...

Author: Han Xinzi@ShowMeAITutorial address: http://www.showmeai.tech/tuto...Article address: http://www.showmeai.tech/article-detail/84Notice: All Rights Reserved. Please contact the platform and the author for reprint and indicate the source1.Python moduleIn the process of program development, the file code is getting longer and longer, and th ...

Author: Han Xinzi@ShowMeAITutorial address: http://www.showmeai.tech/tuto...Article address: http://www.showmeai.tech/article-detail/83Notice: All Rights Reserved. Please contact the platform and the author for reprint and indicate the sourcePython 3 data structureThere are a large number of data structures and containers in Python for programm ...

Playwright is a new generation released by Microsoft in early 2020 automated testing Compared with Selenium, which is the most commonly used tool at present, it can automatically execute the automation operations of mainstream browsers such as Chromium, Firefox and WebKit with only one API. As a pure automation tool for Python language, it can ...