Python

1.if DeclarationSingle If by using a Boolean operator that declares and, or, and not.If-elif-else. Elif that is else ifIf expression1:Expr1_true_suiteElif expression2:Expr2_true_suiteElseNone_of_the_above_suite2.while statementsWhile

DescriptionRecently has been busy with business migration work, has been some days did not write things, although the writing is very slag, fortunately, the function is

The sequences in Python include strings, lists, and tuples, which are shown below as examples of strings, lists and tuple effects are the same as strings>>> a= ' 0123456789 ' >>> a[0:2] ' a[-2 ' >>> a[3:5] ' 8 ' >>> a[0 [] ' + ' >>>:] '-------' 01234

(i) Install pyOpenSSL1, download and install Https://launchpad.net/pyopenssl Pyopenssl-0.11.winxp32-py2.7.msi2, import Pyopenssl library >>& Gt Import OpenSSL (ii) Fundamentals 1, OpenSSL.crypto.X509 ()----a very common certificate format. All

First look at the scheduled execution of the Py file#CODING:GBK fromSeleniumImportWebdriverImportTime,osdriver=Webdriver. PHANTOMJS ()#chromedriver = "C:\Program Files (x86) \google\chrome\application\chromedriver.exe" #调用chrome安装文件夹下的驱动文件 (drivers

The first Guarantee program source file in the Chinese encoding format, such as we put the source file encoding to UTF8.Reload (SYS)Sys.setdefaultencoding (' Utf-8 ')Second, tell the browser what format we need to use to display the

1 #-*-coding:utf-8-*-2 fromMultiprocessingImportProcess,queue3 ImportOs,time,random4 defWrite (q):5 forValueinch['A','B','C']:6 Print 'Put%s to Queue...and Ospid is%s'%(Value,os.getpid ())7 q.put (value)8 Time.sleep (Random.random ())9

Because a Python version is required to install a program today, upgrade the python that comes with the system.What is the Python version of the system first?#python-VShow is 2.4.3, too old, now upgrade to a more stable version of 3.3.0, you want to

1 #-*-coding:utf-8-*-2 fromMultiprocessingImportPool3 ImportOs,time,random4 5 defLong_time_task (name):6 Print 'Run Task Name%s and PID:%s.'%(Name,os.getpid ())7Start =time.time ()8Time.sleep (Random.random ())9End =time.time ()Ten Print

Bloggers in the Win7 system using Django encountered the problem, checked the next StackOverflow, found that the general solution is as follows:Add in setting.pyTemplate_dirs = ( os.path.join (Base_dir, 'templates/'), 'templates/'). Replace (

Cause: A few years ago in order to develop a monitoring system, it was necessary to periodically check the status of the system, so it was necessary to add, queue (by Time), remove and so on, and inadvertently discovered that there was delayqueue in

Welcome reprint, Reproduced please specify the original address: http://blog.csdn.net/majianfei1023/article/details/46781581Linux build boost Link: http://blog.csdn.net/majianfei1023/article/details/46761029Compile and install the boost yesterday,

The concept of Python tupleTuple is immutable list. Once a tuple has been created, it cannot be changed in any way. Conversion of Tuple to lista Tuple can be converted into a list and vice versa. The built-in tuple function receives a list and

@ Original websiteBecause the tuple is immutable, the code is more secure. If possible, you can use a tuple instead of a list as much as possible.The trap of a tuple: when you define a tuple, the elements of a tuple must be determined when defined,

Python automatic operation and maintenance development activity Salon2015-07-11 (Saturday)Site restrictions, up to 50 people to participate, registration as soon as possible!Pro, has been 2015 years, as a maintenance engineer you still in the

Python: OpenSSL and openssl(1) install pyOpenSSL1, download and install https://launchpad.net/pyopenssl pyOpenSSL-0.11.winxp32-py2.7.msi2, import pyOpenSSL library> import OpenSSL (2) Basic knowledge 1, OpenSSL. crypto. x509 () X.509 is a very

Python name bindingIn Python, objects are associated and referenced by names. Python introduces a name through the name binding operation. The so-called code block in Python is a program that acts as the execution unit. For example, module, function,

Python deletes an instance of the specified type (or not specified, This article analyzes how to delete a specified type (or unspecified) file in python. Share it with you for your reference. The details are as follows:Delete non-source files in the

Python implements ping, and python implements ping This example describes how to implement ping in python. Share it with you for your reference. The details are as follows: #! /Usr/bin/env python # coding: The utf-8import OS, sys, socket, struct,

Python implements image ry transformation and python image ry This article describes how to implement geometric transformation of Images Using Python. Share it with you for your reference. The specific implementation method is as follows: Import