Python

#-*-coding:utf-8-*-ImportUrllib2ImportReurl='https://book.douban.com/tag/%E5%B0%8F%E8%AF%B4'Request=Urllib2. Request (URL) urlopen=Urllib2.urlopen (Request) Content=urlopen.read () reg_0= Re.findall (r'title.+ "\s*on', content) reg_1= Re.findall

English documents:class bytearray ([source[, encoding[, errors]]) Return a new array of bytes. The bytearray class is a mutable sequence of integers in the range 0 bytes type has, see Bytes and Bytearray Operations.The optional source parameter can

F=open (File,mod)Str1=f.readline ()//Read the contents of a lineStr=f.readlines ()//Read all the remaining contentsWhen MoD is set to "A +", the contents of the file cannot be readFile Mode comparison:Str1=[]For line in STR:Line=line.strip

Python __name__ = ' __main__ ' role, what the hell?There is a phrase that sums up the meaning of this code in a classic way:"Make a script both importable and executable"It means that the script module that you write can be imported into other

In a conditional operation, for a simple if Else statement, you can use the ternary operation to denote that:# Normal Conditional statement if 1 = = 1: name = ' Wupeiqi ' else: name = ' Alex ' # ternary operation name = ' Wupeiqi ' if 1 = = 1

The format of the simple write function and the meaning of the function prefaceBefore learning how to write code, in order to achieve the same function to write a lot of code, so there is a function, function is equivalent to a tool, function name

Algorithm (algorithm): A computational process, a method of problem solving1. Two characteristics of recursion-Call itself-End conditionComplexity of Time-time complexity is an equation (unit) used to estimate the run time of the algorithm-In

python2.x Web Starter Program#!/usr/bin/python#-*-coding:utf-8-*-#valid only in python2.xImportOs#The OS module in the Python standard library contains common operating system featuresImportRe#Introducing Regular Expression ObjectsImportUrllib#used

The encapsulated function is the module (library).There are two types of libraries:Standard library, do not need to install the library can be imported directly;Third-party libraries that must be installed.Primary Knowledge Standard LibrarySysImport

 The format is as follows:Try:passexcept Exception as E: #如果上面出错, execute the following code passelse: #try如果没出错执行此下面代码 passfinally: #执行完上面的执行此下面代码 Pass try to execute the decentralized codeexcept with exception as E will give the exception to the

#r mode, default mode, file does not exist error#w mode, file exists overwrite, file does not exist then create#a mode, the file does not exist is created, the file exists does not overwrite, the write content is appended to the way.#file processing-

(partial only)String.strip (): Removes the string from the specified character, the default is spaceString.lstrip () String.rstrip (): Remove the space on the right side of the stringString.Split (str): Slice string with str delimiterString.Join

Bubbling algorithm: For the sequence to be sorted, compare two elements at a time, and if the sort is wrong, swap the two until the sorting is complete.Take the series Li = [12,22,3,11,8,10] as an example:For M in range (Len (LI)-1): For n in

Import threadingImport timeImport RandomFrom Kafka import KafkaproducerProducer = Kafkaproducer (bootstrap_servers= ' 192.168.1.10:9092 ')Threads = []Class MyThread (threading. Thread):def __init__ (self, ThreadName, delay):Threading. Thread.__init__

In the previous weeks of the post Grep/sed/awk in combat , " and Coresite-any2 California access to establish a network BGP neighbor relationship. All access information is found on Peeringdb (https://www.peeringdb.com/ix/142), but it is not

1. File=open (' Xxx.txt ', encoding= ' utf-8 '), the open () function is a python built-in read and write operation for a file that returns a Stream object (not the file itself), so the method used is a method of streaming the object. It is

Transferred from: http://blog.csdn.net/u014680513/article/details/51005650# Script to register Python 2.0 or later for use with Win32all# and other extensions that require Python registry settings## Written by Joakim Loew for Secret Labs

Give you a decimal number A, convert it to a B-number, if b>10, in uppercase notation (10 with a, etc.) A is a 32-bit integer, 2 AC:DIC = {10:'A', 11:'B', 12:'C', 13:'D', 14:'E', 15:'F'} defdectoother (num, Basic): RSL= [] whileNum! =0:mod= Int (

Opening and closing filesOpen () functionThe open () built-in function must be opened to create a file object, and the related method can call it for Read and Write.Object=open (file_name [, access_mode] [, buffering])File_name: A variable is a

Python namedtuple (named tuples) using instances#!/usr/bin/python3import Collectionsmytupleclass = collections.namedtuple (' mytupleclass ', [' name ', ' age ', ' job ']) obj = Mytupleclass ("tomsom", page, ' cooker ') print (obj.name) print