python quick start guide

python versionPython's current version is divided into 2.7 and 3.5, and the two versions of the code are currently incompatible, looking at the Python version number:Python--versionBasic data TypesNumber TypeThe use of integral and floating-point data is basically consistent with other programming languages:x = 3Print(Type (x))Print(x)Print(x + 1)Print(x-1)Print(X * 2)Print(x * * 2) x+ = 1Print(x) x*=2Print

Open () succeeds, A file object handle is returned, and subsequent operations on the file must be done through a file handle, such as accessing the file with the read (), ReadLines () method, and closing the file with the close () method.(11) Errors and Exceptions: Handling exceptions with the try-except statement, when executing a python statement error, the Python interpreter throws an exception and disp

Python requests Quick Start, pythonrequests Quick Start Can't wait? This section provides good guidance on how to get started with Requests. Assume that you have installed Requests. If not, go to the installation section. First, confirm: Requests installed Requests is the la

Python Scientific computing-Numpy quick start What is Numpy? Numpy is a Python Scientific computing library that provides matrix computing functions. it is generally used with Scipy and matplotlib. It can be used to store and process large matrices, which is much more efficient than the nested list structure of

Software:Pip Install PYZMQCode:==server.py## Hello World Server in Python# binds REP socket to tcp://*:5555# expects "Hello" from the client, replies with "World"#Import ZMQImport timeContext = Zmq. Context ()Socket = Context.socket (ZMQ. REP)Socket.bind ("tcp://*:5555")While True:# Wait for next request from clientmessage = SOCKET.RECV ()Print ("Received Request:", message)# do some ' work 'Time.sleep (1) # do some ' work '# Send reply back to client

fromSelenium.webdriver.common.byImport by fromTimeImportSleepuserid=input ('username') Passid=input ('Password') Sendtxt="Hello"#Message ContentSendto=input ('SendTo')#Open FirefoxDriver =Webdriver. Firefox () Driver.get ('http://mail.10086.cn/')#Email Address#fill in the user nameEmailelem = driver.find_element_by_id ('Txtuser') Emailelem.send_keys (userid)#User name#fill in the passwordPasswordelem = driver.find_element_by_id ('Txtpass') Passwordelem.send_keys (PASSID)#PasswordPasswordelem.su

The Spring Festival finally over, return to enrich the study of life. Open the long-lost CSDN blog, see the official push "blog markdown Editor Online", let me immediately have the desire to write, is really the welfare of programmers. Before reading a variety of article books, are made with markdownpad notes, like and accustomed to markdown concise grammar.All kinds of convenience. In order to try the results, the previous reading of "Python core pro

quickly became the most popular distributed version control system, especially in 2008, when the GitHub site was online (GitHub is a git-based code hosting platform, paying users can build private warehouses, and our general free users only use public repositories, i.e. the code is open.) ), it provides free git storage for open source projects, and countless open source projects are migrating to GitHub, including Jquery,php,ruby and more.History is so accidental, if not the BitMover company to

007. Quick Start, learn by the side008. Variable TypePrint (type (variable)) see the types of variables now commonly used types of variables are integer, float, character type009. List Base ModuleType conversion: STR (8) converts 8 to a string of value the test character has no way to convert to a character type010. List index 011, loop structureLoop condition, in the for loop, called the loop body, the loo

sometimes referred to as "The simplest, impossible mathematical problem". Remember to convert the return value of input () to an integer using the INT function, or it will be a string. Tip: If number% 2 = = 0, integer number is even. If number% 2 = = 1, it is odd. """defCollatz (number):ifNumber = = 1: return1elifNumber% 2 = =0:numbers= number//2Print(Numbers) Collatz (numbers)elifNumber% 2 = = 1: Numbers= 3*number + 1Print(Numbers) Collatz (numbers)Try: number= Int (Input ("Please enter

#!/usr/bin/env python3.52#Coding:utf-83#4#The main purpose of this project is the processing of strings, the simple format of the output5 Tabledata = [['Apples','oranges','Cherries','Banana'], 6 ['Alice','Bob','Carol','David'], 7 ['Dogs','Cats','Moose','Goose']] 8#The required output is as follows:9#Apples Alice Dogs10#Dranges Bob Cats11#Cherries Carol Moose12#Banana David Goose13 14#no output format, output format is all right-aligned15defprinttable (data):Str_data ="'Col_len = [] 18 forRowi

#! Python3#Import modules and write comments to describe.Importzipfile, Os fromPILImportImage fromPILImportImageFile#os.chdir (' d:\\my documents\\ ')Imagefile.load_truncated_images =True forFolderName, subfolders, filenamesinchOs.walk ('d:\\my documents\\'): Numphotofiles=0 Numnonphotofiles=0 forFileNameinchFilenames:#Check if file extension isn ' t. png or. jpg. if not(Filename.endswith ('. PNG')orFilename.endswith ('. jpg') orFilename.endswith ('. PNG')orFilename.endswith ('. JPG'

#! Python3#resizeandaddlogo.py-resizes all images in current working directory to fit#in a 300x300 square, and adds catlogo.png to the lower-right corner.ImportOS fromPILImportImageos.chdir ('c:\\users\\administrator\\python35-32\\test\\kuaisu\\ Sci Fi') #设置文件路径SQUARE_FIT_SIZE= #设置图片修改大小logo_size=80 #设置LOGO大小, the original is 800 pixels, too big, set to 80Logo_filename='Catlogo.png'Logoim=Image.open (logo_filename) Logoim=logoim.resize ((logo_size, logo_size)) Logowidth, Logoheight=LogoIm.sizeos

-coordinate. Copy the previous grid values, write the code to print out the image ... Oo. Oo... Ooooooo. Ooooooo ... Ooooo ..... Ooo....... O.... Tip: You need to use loop nesting loops, print out grid[0][0], then grid[1][0], then grid[2][0], and so on, until Grid[8][0]. This completes the first line, so the next line is printed. The program will then print out grid[0][1], then grid[1][1], then grid[2][1], and so on. The program finally prints out grid[8][5]. Also, if you do not want to autom

# -*- coding:utf-8 -*-#strip正则表达式#if 只字符串，不带参数，去首尾空白#else 去除参数text=input("Input a text:")import redef st(text): #原样返回检测 textReg=re.compile(r"^\w+$") #前后或前或后，空白检测 blankReg=re.compile(r‘^\s+(\w+)\s+$|^\s+(\w+)|(\w+)\s+$‘) check_blank=blankReg.search(text) #参数检测 argsReg=re.compile(r‘(\w+)\s+\.*‘) check_args=argsReg.search(text) if textReg.search(text): return(text) elif check_blank: #groups检测，直接通过groups输出 for i in check_blank.groups(): if i: return(i) elif check_args: return(check_args.group(1)) el

# -*- coding:utf-8 -*-# 7.18.1# 强口令检测# 写一个函数，使用正则表达式，确保传入的口令字符串是强口令# 长度不少于8个字符，同时包含大小写，至少有1个数字import repassd=input("Input your password:")ch_len=re.compile(r‘.{8,}‘)ch_uppercase=re.compile(r‘[A-Z]{1,}‘)ch_case=re.compile(r‘[a-z]{1,}‘)ch_number=re.compile(r‘\d{1,}‘)if ch_len.search(passd): if not ch_case.search(passd) or not ch_uppercase.search(passd) or not ch_number.search(passd) : print("弱密码") else: print("strong enough")else: print("length less then 8")"P