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listLet's look at the following code:1names = ['Peter','Mina','Mpeter','Katherine']2My_friends =names[:]3 4 Print('I have a list of my friends:')5 Print(names)6 Print("however Mina have a same list!")7 Print(my_friends)8 Print("But Mike just has both in my list")9Mike_friends = Names[0:2]Ten Print(mike_friends)The principle of copying a list is actually simple:　　Declares a list, and assigns a value, and then declares a list B, and then iterates through list A and passes the value to the end of

Assume is s a string of lower case characters.Write A program This prints the longest substring of in s which the letters occur in alphabetical order. For example, if s = ‘azcbobobegghakl‘ , then your program should printLongest substring in alphabetical order Is:begghIn the case of ties, print the first substring. For example, if s = ‘abcbcd‘ , then your program should printLongest substring in alphabetical order IS:ABC# Paste Your code into this boxCount = 1result = S[0]While S:Newcount = 1New

In the support of everyone, basically completed a quick tour of the serial. I learned a lot from this process. After Python's foundation, the Python standard library naturally becomes the next challenge. The importance of the Python standard library is:1 It is part of Python.2 python philosophy is a problem with only

Python automated O M course learning-Day1, python automation-day1 This article summarizes the first day of the Python automated O M course for old boys. The general content is as follows: 　　Python Introduction First

old boyis a domestic group early to do Python training institutions, the following small series for the Python Automation course and the full stack of lessons to do a summary, hope to help you:python full stack development:Suitable for the crowd: fresh undergraduates, specialties, and 0 basic studentsLearning Basics: 0 BasicsClass form: 5 months, Monday to Friday

SummaryIntroductionResearch background and research status of the projectBackground and purpose of the project Research status meaning Main work Project arrangement Development tools and their development environmentDemand Analysis and Design Functional AnalysisCrawler page CrawlCrawler page ProcessingCrawler function implementationCrawler SummaryPython Programming Course report the application of Python te

python is currently a great potential development language, other high-level languages such as Java and C # basic Javapython and other variants of Python is to convert bytecode first to Java, then to C, then to machine code, so the efficiency of a low and a variant is PyPy, this method is the first time the use of C-python code through c to machine code, Then t

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performing simple statistical operations on a listLike the Max in C + +, the min function, but this three is quite powerful with traversing the entire list to find the maximum, minimum, and value.Sample code:1 digits = [1, 2, 3, 4, 5, 6, 7, 8, 9, 0]2print(min (digits))3pri NT(max (digits))4print(sum (digits))Four, list parsingThe explanation in the code parsing book is that the code for the For loop and the creation of the new element is merged into a single line and the new element is automati

, you can use pass to skip, cannot write anything, such as:If a==a: passesle: print (' Hello World ')5. Basic data Type 5.1 strings all enclosed in quotation marks are characters, collectively referred to as strings, ', ', ', ' and ', ' only these three are strings, and starting with a quotation mark must end with the same quotation mark. Addition of strings:A= ' Alex ' c= ' sb ' n=a+cn= ' ALEXSB 'Multiplication of stringsB=a*10b= ' Alexalexalex ... ' 10 total5.2 Numbers without quotation