Python indent Difference Analysis

The following two python programs have the same code but different running results, because the last line of return indentation is different.Copy codeThe Code is as follows:Def powersum (power, * args ): '''Return the sum of each argument raised to

Example of using java to directly call a python script

Copy codeThe Code is as follows:Import java. io. BufferedReader;Import java. io. InputStreamReader; Public class Main {Public static void main (String [] args ){Try {System. out. println ("start ");Process pr = runtime.getruntime(cmd.exe c ("python

Python timer examples

Copy codeThe Code is as follows:Class SLTimer (multiprocessing. Process ):# From datetime import datetime# Import time Def _ init _ (self, target = None, args = (), kwargs = {}, date = None, time = None ):'''\@ Param date 1900-01-01@ Param time 00:00

Simple implementation of python multi-process communication module

Multi-process communication methods vary by number. Just now I tried to encapsulate the multi-process communication module multiprocessing. connection in python. A simple test shows that the efficiency is good. It should be based on socket

Python uses rabbitmq to implement web crawler examples

Compile tasks. pyCopy codeThe Code is as follows:From celery import CeleryFrom tornado. httpclient import HTTPClientApp = Celery ('task ')App. config_from_object ('celeryconfig ')@ App. taskDef get_html (url ):Http_client = HTTPClient ()Try:Response

Python 360 character display interface

Copy codeThe Code is as follows:#! /Usr/bin/python#-*-Coding: UTF-8 -*- From push_button import *From clabel import *From common import * From PyQt4.QtGui import *From PyQt4.QtCore import *From PyQt4.Qt import * Class CharacterWidget (QWidget ):Def _

Python original socket programming example

The following describes how to construct an HTTP packet, The IP layer and TCP layer use the python Impacket library, and fill in the http content. Copy codeThe Code is as follows:#! /Usr/bin/env python#------------------------------------------------

How to extract web links using python

Copy codeThe Code is as follows:# Encoding: UTF-8Import socketImport htmllib and formatterDef open_socket (host, servname ):S = socket. socket (socket. AF_INET, socket. SOCK_STREAM)Port = socket. getservbyname (servname)S. connect (host, port

Example of python Processing Chinese encoding and determining Encoding

All of the following are for python Copy codeThe Code is as follows:# Coding: UTF-8# Chardet needs to be downloaded and installed Import chardet# Crawling webpage htmlLine = "http: // www. ***. com"Html_1 = urllib2.urlopen (line, timeout = 120).

Pyqt4 tutorial-Example of a translucent weather forecast Interface

Copy codeThe Code is as follows:#-*-Coding: cp936 -*-Import sysImport urllib2Import jsonFrom PyQt4 import QtCore, QtGuiClass MyWindow (QtGui. QLCDNumber, QtGui. QWidget ):Def _ init _ (self, parent = None ):Super (MyWindow, self). _ init _

Example of a python puzzle game computing Tower

The quanta (also known as Hanoi) problem is originated from an ancient legend of India's educational toys. When I created the world, da fan Tian made three diamond pillars, stacked 64 gold disks from bottom to top in order of size. The great fan

Example of using python to connect to mysql to call a stored procedure

Copy codeThe Code is as follows:#! /Usr/bin/env python#-*-Coding: utf8 -*-Import MySQLdbImport timeImport OS, sys, stringDef CallProc (id, onlinetime ):''' Call the stored procedure,Input parameter: Number, online time, output: account, password;Use

Pyqt4 tutorial-messagebox example

Copy codeThe Code is as follows:# Coding = UTF-8# Dialog boxImport sysFrom PyQt4 import QtGui, QtCoreClass Window (QtGui. QWidget ):Def _ init _ (self ):Super (Window, self). _ init __()Self. setWindowTitle ("hello ")Self. resize (500,500)Gridlayout

Python: How do I keep the original image name when downloading images using ImagesPipeline OF THE Scrapy framework?

By default, when you use the ImagePipeline component to download an image, the image name is saved Based on the SHA1 value of the image URL.For example:Image URL:http://www.example.com/image.jpgSHA1 result:3afec3b4765f8f0a07b78f98c07b83f013567a0aThe

Python Initial Experience: Write a small crawler with Weibo, blog, and space in three sentences

Target: Use python to write something that automatically accesses the webpage. Python is really powerful enough. I have improved myself by referring to an excellent python video training program on the Internet. To enable python to open the browser

Python implements simple crawling

When we browse Web pages on the Internet, we often see some nice pictures. We want to save and download these pictures, or use them as desktop wallpapers or design materials. The most common practice is to right-click and choose Save. However, when

Python-process one character each time

Process one character each time       UseProcess one character each timeString, including four methods: 1. UseList, Converts a string to a character; 2.For LoopTo traverse every character of a string; 3. UseSet + for LoopTo process every character

[Python] How to use Pyramid?

In this blog, I will tell you how to use Pyramid by codes. '''The start point is the Configurator class.Use it to configure the routes and views, give application back to wsgi server finally.The class Configurator inherits many classes.It is a big

Modules in Python

1. How to make your own code a module. You only need to put the. py file in the specified folder to let the interpreter know where to find the module. You can set a directory in either of the following ways: # Method 1: Edit sys. path: import

Special methods for function processing in Python

Many languages provide processing mechanisms for parameters or variables. As a flexible Python, it provides some special methods for function processing. Filter (function, sequence ):Execute function (item) in sequence for items in sequence, and

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