python turtle tutorial

See the Chinese version of the Python tutorial, found that is the web version, just recently in the Learning Crawler, like crawling to the localThe first is the content of the Web pageAfter viewing the Web page source, you can use BeautifulSoup to get the title and content of the document and save it as a doc file.You need to import the module using the From BS4 import BeautifulSoupThe specific code is as f

Concise Python tutorial --- 15. More Python content Special Method Some methods have special meanings in the class, which has been mentioned earlier. For example, the _ init _ method and the _ del _ method. These special methods are very useful. For example, you want your class objects to use indexes, such as OBJ [Key], you can implement the _ getitem _ method i

Python tutorial 11 -- Python decorator A function is also an object, and a function object can be assigned to a variable. Therefore, a function can also be called through a variable. The function object has a (Double underline + name + double underline) attribute. You can get the function name: Now, let's assume that we want to enhance the functions of the now (

Use Python as a calculator division operationWhen using/representing division operations, we generally get floating-point numbers, and if we need to get integers, we can use the operator//Remainder calculation%Power exponentiationSystem built-in variables _Built-in variable _, which stores the most recent results.StringStrings can be concatenated (glued together) by the + operator and can be duplicated by *, and adjacent two string literals are automa

Because the discovery of the basic tutorial I recommended before the site has been very perfect, do not repeat the writing, so Ben Wang Lai to do exercises together.First, the principle of encryptionI remember when I learned C + + when I learned the input and output stream, when Mr. Wang taught us to write a small encryption program, so this time since the study of Python This small exercise of course not l

Basic tutorial for getting started with Python (learningPython) -- 4.2Python's count loop body for statement. Another type of loop body structure in Python is the counting loop body for. some statement blocks are executed for a certain number of times through the for loop. the syntax structure is as follows. Another type of loop body structure of

Original title: A Byte of PythonAuthor: Swaroop, C. H.Translator: Shen JieyuanPublisher: UnknownAdvantages1. The explanation is very detailed, very basic, is suitable for the introduction, has also made the simple introduction to the compiler2. The explanation of the __name__ attribute is more detailed, while the other books do not talk about this piece of knowledge3. There is the knowledge of class, inheritance, for me without Java Foundation, the explanation is very popular, but this book is o

Python Regular Expression tutorial 2: capture, python Regular Expression Preface In the previous article, we introduced the basics of Python regular expressions. In this article, we will summarize the usage of Regular Expressions for capturing. I will not talk about it below. Let's take a look at the detailed introduct

How many times have you been stuck in a situation where you have to change someone else's code? If you're part of a development team, you're more than you want to be in this situation. However, Python has a neat debugging feature (like most other languages), which is handy in this case. This is a quick tutorial and hopefully it will make your coding life easier.1. A messy procedure For the purposes of this

monitoring status is required to be notified in advance through a health check. Zabbix as an operational monitoring evergreen tree, it is easy to monitor thousands of servers. This section explains the installation of Zabbix, the basic configuration item monitoring of the server. The 16th chapter of the course summaryReview the key knowledge of the course.: Baidu Network Disk downloadOriginal address: http://linyunbbs.com/thread-2186-1-1.htmlQuick Start Linux Play typical application video

Sequence common operations of notes in the basic python tutorial, and python Sequence Index All the elements in the sequence are numbered-starting from 0. When a negative index is used, Python starts counting from the right, that is, from the last element. The position number of the last element is-1. in addition, a

Obtain process information from Python and Ubuntu. Basic python tutorial I want to know the memory usage of the process. First, you must obtain the system memory information: Def memory_stat (): ''' Return the memory info ''' Mem = {} Stat = {} F = open ('/proc/meminfo ') Lines = f. readlines () For line in lines: If len (line) Name = line. split (':') [0] Var =

Python tutorial 10-Python anonymous Functions When you pass in a function, you do not need to explicitly define the function. It is more convenient to directly pass in an anonymous function. In Python, anonymous functions are provided with limited support. Take the map () function as an example. When f (x) = x * x is

This article mainly introduces how to compile Python scripts to download the topnexus wallpaper in batches. Compared with common crawler crawlers, this article's download wallpaper tutorial also includes the implementation of setting the resolution to be downloaded, for more information, see topnexus, my favorite wallpaper download website. There are many high-quality wallpapers on it, which are required al

Basic python Tutorial Study Notes --- (4) dictionary and python Study NotesSequence is a data structure in python, and ing is another. Mapping refers to a value by name. The only ing structure built in python is a dictionary. The values in the dictionary have no special orde

and after expressions, whereas logic or or means that there is a truth in or around the whole, and the function of logical non-not is that if the value of the expression behind it is true, The result is false, and The result is true if the expression that is behind the not evaluates to False.>>> A = true>>> B = false>>> A and bfalse>>> a or btrue>>>not afalse>>Gt A and (not B) TrueThis article is from the "Python Training Zhipu Education" blog, so

software: System software is a variety of operating systems, such as Windows, Linux, UNIX, and so on, including operating system patches and hardware drivers, are system software class. Application software can be subdivided into a variety of more, such as tool software, game software, management software, etc. belong to the application software class. system software, System software is responsible for the management of computer systems of various independent hardware, so that they ca

support for asynchronous IO. If you take advantage of the asynchronous IO support provided by the operating system, you can use a single-process single-threaded model to perform multitasking, a new model called the event-driven model, Nginx is a Web server that supports asynchronous IO, and it can efficiently support multitasking by using a single-process model on a single-core CPU. On multi-core CPUs, you can run multiple processes (the same number as the number of CPU cores) to take advantage

Compile a Python script to configure VPN in batches and a python script vpn tutorial Origin As we all know, the recent network is not harmonious, the speed is slow, and the VPN is still disconnected. Fortunately, yunti provides a lot of servers for switching, but there are quite a lot of yunti servers, in Linux, Network Manager does not support batch configuratio

In general, a server client that only supports one chat room uses Telnet Books: Python Data Summary Python tutorial here is the source code in Chapter 24th. It is used for practice research. # Coding: utf8 # python2.7 chatser2.py # a slightly more complex chatting room server ''' after using python to start the servic