Python

What is a regular expression?Regular expressions are not just Python patents, but there are regular expressions in almost every other language. Just like Bash has a regular expression command--grep, and personally feel that the regular expression in

--IntroductionWhen the program runs, it is inevitable that the bug, when the bug, the user may be difficult to understand that the pile of error code is what is what, in order to allow users to better understand the cause of the errors or directly

The string supports two types of formatted operations, as follows:>>>'%s python my%s'% ('Hello',' Love')'Hello python my Love'>>>'{0} python my {1}'. Format ('Hello',' Love')'Hello python my Love'In addition, Python supports the operation of the

Python--Shell:Reference articles1. Environment variablesImport os var= 123 or var= ' 123' os.environ[' var ']=str (Var) #environ key value must be a string os.system (' echo $var ') 2. String connectionImport os path= '/root/a.txt ' var=[1]

One, process queue.Multiple processes to manipulate the data in a queue, look like a process queue, just a queue, single in fact, how many processes do you open, once these processes go to use this queue, then the queue will be copied how many

You can use a sandbox when your computer needs to use multiple versions of Python, or use Docker;Virtualenv is a python-brought, installed by Pip[[email protected] public]#CD jinjie_python/[[email protected] Jinjie_python]#virtualenv test1Using Base

C:\Python27\Lib\ConfigParser.py:Optionxform (self, optionstr): Return Optionstr.lower ()Changes the option name in the configuration file to lowercaseIn order to preserve the case format of the configuration item name, override:class myconf (

First of all, use code to see __name__ 's role.　　1 moduone.py called program2 3 defMethodOne (varone):4 Print(__name__)5 Print(Varone)6 7MethodOne ("Program Testing")8 9C:\python moduone.py#you can see that __name__ is printed as "__main__"

-*-coding:utf-8-*-import urllib2import osdef mean_audience_score (id): ARV = 0.0 Sc_url = "http://movie.mtime.com /"+ ID +"/"Sc_req = Urllib2." Request (Sc_url, headers={' user-agent ': "Magic Browser"}) Sc_page = Urllib2.urlopen (sc_req) sc_strw

JsonData exchange between different platforms (typically different languages)Vim day6-1.py#!/usr/bin/python#-*-coding:utf-8-*-import jsonname = { ' alex ': [+, ' M '], ' rain ': [+, ' F ']}name_after_ Transfer = Json.dumps (name) print

Python/http Protocol HTTP protocol:HTTP is a communication protocol, which specifies the format of the content that the client sends to the server, and the content format that the server sends to the client. In fact, we have to learn the two formats!

1 literal constants, such as 2, ' This is ok ' such a string>>> print (' a,2,3 ')a,2,32 string Single quotation mark (')Use single quotation marks to indicate a string, similar to a strong reference in the shell, with all the spaces and

One, logging moduleIdle to have no matter, think logging module compare have empty, probably tidy up a bitSecond, the composition of the logging moduleLogging module, go inside you will see three packages: Init file, Config,handlerHandler is to deal

Any (iterable)Role:If any element of iterable is not 0, ' ', False,all (iterable) returns True. Returns False if Iterable is empty.The function is equivalent to:1 def Any (iterable): 2 for inch iterable: 3 if element:4 return

The previous section describes how to build a selenium system environment, so this section explains how to start writing the first automated test script.selenium2.x the browser native API into the Webdriver API, you can directly manipulate the

This article mainly introduces the use of Python in the Pandas Library for CDN Log analysis of the relevant data, the article shared the pandas of the CDN log analysis of the complete sample code, and then detailed about the pandas library related

This article mainly introduces the Python implementation of the automatic remote access SCP file instance code of the relevant information, the need for friends can refer to the following Python implements automatic remote login SCP file Instance

This paper mainly introduces the method of simple image processing using Python and the example of Python auto-production expression pack, which has a good reference value, and then we can see it together with the small series below. As a data

This article mainly for you in detail how Python read MySQL database table data, with a certain reference value, interested in small partners can refer to The example of this article for everyone to share the Python read MySQL database table data

Python the random module in is used to generate a stochastic number. Here are some of the most commonly used functions in the random module. 1.random.randomRandom.random () is used to generate a random number of 0 to 1 Points: 0 2.random.uniformThe