Python

Previously tried to back up switch log with expect with bash script, but because it was serially executed, the device took too long and often made a mistake, resulting in incomplete backups. So on the internet to find Python multi-threading related

Round (X,[n]) rounding n reserved fractional number1, when n is not filled, the default is 0, that is, the decimal part is not retainedA, when the fractional part is only 0.5 when the integer part if it is an odd number in 1, if even the fractional

File I/O is one of the most important techniques in Python, and it is very simple to do I/O to files in Python.1. Open FileGrammar:Open (name[, mode[, Buffering])1.1 File Mode' R ' Read mode 'w' write mode 'a'

When it comes to digital image processing programming, perhaps most people will think of MATLAB, but MATLAB has its own shortcomings:1, not open source, the price is expensive2, the software capacity is large. Generally more than 3G, high version

Recent free time in exploring selenium's automated testing, simply wrote a small framework to test a company's web product. The framework includes the following modules:1. Test Case Authoring Mode (page mode, refer to previous post

0. About Context ManagerThe context manager is an object that can be used in the WITH statement, with the __enter__ and __exit__ methods.With manager as Var: Do_something (Var)　　is equivalent to simplification in the following cases:var = manager.__

Python Create Listone of the data types built into Python is the list: lists. A list is an ordered set of elements that can be added and removed at any time.For example, by listing the names of all the classmates in the class, you can use a list to

Button's Build:Import Tkinter as TKWINDOW=TK. Tk () def buttonclick (): print "beep!" Button=tk. Button (window,text= "Click me!", Command=buttonclick) Button.pack () Window.mainloop ()The same way change the method to the text on the buttonImport

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

As you may have heard, the function with yield is called generator (generator) in Python, what is generator?Let's throw away the generator and show the concept of yield with a common programming topic.How to generate Fibonacci columnsThe Fibonacci

Shopping Cart program, python Shopping Cart program   _ Author _ = 'xitaozi''' use the list to implement the shopping cart ''' produce _ list = [('macbook pro 100', 15.4 ), ('Think pad X1 carbon ', 10000), ('hp WASD', 7000), ('Dell xps 13', 8000)]

A simple summary of the time and date processing methods in Python, and a python Processing MethodThis article mainly introduces the summary of Python practical date and time processing methods, this article explains how to get the current datetime,

Detailed explanation of Date and Time Processing in Python, and detailed explanation of python In Python, there are three processing libraries for time and date: time, datetime, and Calendar. datetime has three classes: datetime. date, datetime.

[Terry Notes] database operations on personnel list files, terry notes     Original file (data has been desensitized ): Staff_id, name, age, phone, dept, enroll_date1. Ji Jianming, O & M2. Liu Hailong, O & M3. Yan peifei, 157016802, IT4, Sun Haitao,

Python built-in functions (31) -- id, python built-in functions 31 English document: Id( Object) Return the "identity" of an object. This is an integer which is guaranteed to be unique and constant for this object during its

Python note-3 (Purchase Product), python-3 #! /Usr/bin/env python#-*-Coding: UTF-8 -*-# The following is a shopping program:# First enter the salary, display the commodity list, purchase, quit, and finally format and output the purchased

Python intensive training notes (6)-keep the dictionary in order and enhance python Training The python dictionary is a very convenient data structure. With it, we can easily find his score, ranking, and other values based on the name (key ),

Summary of object iteration and anti-iteration techniques in Python, python object 1. How to Implement the iteratable objects and iterator objects? Actual Case A software requires that the smell information of each city be captured from the network,

Python uses the smtplib method of the email module, pythonsmtplib Smptp class definition: smtplib. SMTP (host [, port [, local_hostname [, timeout]) is used as the SMTP constructor to establish a connection with the smtp server. After the connection

Python environment variable setting method, python environment variable The scripting languages in Alias Maya are Mel and Python. It is said that Houdini will also use Python as the main scripting language in the future. As a special effect teacher,