Python

Title Description:Given a sorted list, delete all duplicate elements, leaving only one for each element.Have you ever encountered this problem in a real interview? YesSample ExampleGive 1->1->2->null , return1->2->nullGive 1->1->2->3->3->null ,

1. Inheritance of classes and overloading of methodsThe above is defined by a Class A, and then by the definition of a class B,b inherits the Class A, so that B has a non-private properties and methods.1 classWasher:2company='ZBL'3def __init__ (self,

One, anonymous function and built-in function Supplement 1. SyntaxPython uses the Lambda keyword to create anonymous functions. Anonymity means that a function is no longer defined in a standard form such as a DEF statement.Grammar:Lambda [arg1[,

ObjectiveIn the Python selenium2 automated test process, a suitable report is required, and the Htmltestrunner module provides us with a good report generation function.What is HtmltestrunnerHtmltestrunner is an extension of the UnitTest module of

Description of the original title:Finds the nth number in the Fibonacci sequence.The so-called Fibonacci sequence refers to: The first 2 numbers are 0 and 1. The number of I is the number I-1 and the number I-2. The first 10 digits

First, what is object-oriented programmingOO programming (Object Oriented programming), or OOP, is a programming idea. OOP takes objects as the basic unit of a program, and an object contains functions for data and manipulating data.Process-oriented

Niche Blog:http://xsboke.blog.51cto.comNiche Q q:1770058260------- Thank you for your reference, if you have any questions, please contact I. Introduction of the Module1. Concept a code set consisting of N. py files is called a

In Python, the processing of Chinese characters has always been a headache, a word is garbled, and the cause of garbled is not the same, sometimes Python itself default encoder settings are not correct, and sometimes the use of the IDE decoder is

ImportOs,pypdf2os.chdir ('c:\\users\\administrator\\python35-32') Dict=open ('C:\\users\\administrator\\python35-32\\dictionary.txt') #读入字典pdfReader= Pypdf2.pdffilereader (Open ('encryptedminutes.pdf','RB')) #读入PDF文件 forNinchdict.readlines ():#Print

#1, open the file#2, read/write files#3. Save FileName =OpenC\\Users\lingyul\desktop\login.txt ',' w+ ',encoding=' Utf-8 ')#r如果不写路径, the default current path is taken#打开文件有三种模式,# W: Write mode, if you open a file that already exists in W mode, it

ObjectiveSome post request parameters are in JSON format, mentioned in the previous second POST request, need to import JSON module processing.Common interface return data is also JSON format, when we make judgments, often only need to extract a few

---map (fun,iterable)First take a look at the map () function, the map function accepts two parameters, the first parameter is the name of the function, and the second parameter is an iterative object. That is, map (fun,iterable)The map function

The OS module of the Python-based moduleThe role of the OS module:OS, the semantics of the operating system, so it must be operating system-related functions, can handle files and directories we need to do daily manual operations, such as: Display

Character encoding as we've already said, strings are also a type of data, but a special string is a coding problem.   Because computers can only handle numbers, if you want to work with text, you must convert the text to a number before processing

DirectoryFirst, how to writeSecond, the variableThird, the data typeIv. OtherV. Statements and exceptionsVi. functions JavaScript is a programming language, the browser has built-in JavaScript interpreter, so in the browser according to the

First, the basic principle analysis of socket communication based on TCP.TCP-based socket communication, mainly relies on two loops, respectively, is the connection cycle and the communication cycle.This previous article has been written, here will

Commonly used escape characters and meanings Escape character Meaning \ (at end of line) Line continuation character \\ Backslash symbol \‘ Single quotation marks

Like other languages, Python provides a way to convert the casing to a String object: Upper () and lower (). More than that, Python also provides us with the initials, the rest of the lowercase capitalize () method, and the first uppercase of all

Basic data types in detail one, str string1.capitalize string first letter capitalization　　Does not change itself, it generates a new value1 name = ' Zhangsan ' 2 new_name = name.capitalize () 3 print (name) 4 print (new_name) 5 6 output: 7 zhangsan8

Use Python to operate Csv files, Csv is the abbreviation of Comma-Separated Values. It is the table data stored in the form of text files, such as the following table: It can be stored as a csv file with the following