Python

# -*- coding:utf-8 -*-# ASCII 是一种单字节的编码，可表示256个不同字符# 中文 在 python3 中默认用 unicode编码lst = ['你', # str类型，unicode编码 str('你'), # 同上 u'你', # 同上 '你'.encode('utf-8').decode('utf-8'), # 同上 # encode 将 str 转为 bytes 类型，可以再用 decode 转回 str 类型

Python crawler tutorial -34-distributed crawler Introduction Distributed crawler in the actual application is still many, this article briefly introduces the distributed crawlerWhat is a distributed crawler Distributed crawler is more than one

?? In view of the current domestic search engine still does not use Google, the author will seek Bing search to replace. In the process of using Bing, the author found that Bing's background image is really a conscience, very pleasing, so the author'

The 1th chapter of the course IntroductionDescribes how to configure the system development environment and how to join the GitHub private repository for the latest source code.1-1 Guided Learning1-2 Development Environment Configuration1-3 How to

Through the TCP/IP protocol learning, I wrote a can achieve the Pcap file in the IPV4 TCP stream extraction, as well as extract the specified TCP stream, in order to learn, did not adopt the third party package parsing pcap, but the analysis of the

Unsupervised machine learning algorithms no guidance is provided by any supervisor. That's why they are tightly integrated with real AI.In unsupervised learning, there is no correct answer and no supervisor guidance. The algorithm needs to discover

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#coding =utf-8from selenium import webdriverfrom selenium.webdriver.common.by import  Byfrom selenium.webdriver.common import keysfrom selenium.webdriver.support  import selectfrom selenium.common import exceptionsimport unittest,time,reclass  Baidu

Originally built an automated testing framework, vaguely superficial understanding, is to build a only can be used, is not the framework of the thing.Now look back and see how each step is connected and how it works.This blog first talk about the

If an element exists in the list, the returned Task:You have a list L, there is an index number I, if I is a valid index, return l[i], if not, return the default value VSolution: The list supports bidirectional indexing, so I can be

The OS module that is first considered when we need to invoke the command of the system. Use Os.system () and Os.popen () to operate. However, these two commands are too simple to complete a complex operation, such as providing input to the executed

ArticleDirectory 1. Quick sorting 4. Results The principle of quick sorting is to extract the first number and divide the entire array into two waves. One dial is greater than this number, and the other wave is smaller than this

Import struct Pack, unpack, pack_into, unpack_from   # Ref: http://blog.csdn.net/JGood/archive/2009/06/22/4290158.aspx Import struct # Pack-Unpack Print '= pack-Unpack =====' STR = struct. pack ("II", 20,400) Print 'str: ', STR Print

Python implements a simple ftp client, pythonftp Client This example describes how to implement a simple ftp client using python. Share it with you for your reference. The specific implementation method is as follows: #! /Usr/bin/python #-*-coding:

Configure the Python development environment for Mac and concatenate simple strings and Integers First, install Python 3.4 with HomeBrew. The Python that comes with Apple. If it is developed, forget it. Enter the following command in the

Python implements batch download of Sina blogs, and python implements Sina blogs This example describes how to download Sina blogs in batches using python. Share it with you for your reference. The specific implementation method is as follows: #

Python Study Notes 15: Date and Time Processing notes, python Study Notes #-*-Coding: UTF-8-*-import datetime # date def dateadd_day (days) for the given date to the next N days: d1 = datetime. datetime. now () d3 = d1 + datetime. timedelta (days)

Learn how to operate Python dict () and learn python Many dict methods are similar to the list method. Here we will compare them with the list method. Nesting Nested in the list also exists, that is, the element is list. In dict, there are similar

[Learn Python with me] multiple threads in Python and multiple threads in python In fact, I feel that Python multithreading is similar to Java's multithreading mechanism, but it is more flexible than JAVA's multithreading. In the early

2013-09-11 magnet # undertake software automation implementation and training and other gtalk: ouyangchongwu # gmail. comqq 37391319 # blog: http://blog.csdn.net/oychw # copyright, reprinted and published, please contact us by letter # Shenzhen