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In the last issue, we explained Data standardization For relevant content, first sort the frequency of words, and then convert some case to reduce the repeated content of 2-gram sequence.When we really step out of the basic door of network data collection, the first problem we encounter may be: "how can I get the information behind the log ...

Click on "end of life", pay attention to the official account. Daily technical dry goods, delivered at the first time!     I believe that as a Java developer, you've had enough of Maven's slow compilation, but you can't switch to other faster construction tools for the time being due to historical baggage, usage habits and other probl ...

There are many special symbols in MySQL that are quite disgusting. For example, there are single quotation marks ('), double quotation marks ("), backslashes (\) and so on in the string. Students can make up for the possible problems first? In our usual SQL operations, if you don't pay attention to these symbols, you will be given a pot o ...

Source download The source code of this chapter is github What is the lifecycle of spring beans For ordinary Java objects, create the object when new, and then the object can be used. Once the object is no longer used, Java automatically garbage collects it. The objects in Spring are beans. Beans are no different from ordinary Java object ...

Recently, I plan to do network related optimization work. I have to familiarize myself with the network framework again. OkHttp is the leader of the network framework in the Android field. I take this opportunity to make an in-depth analysis of some internal implementations of OkHttp. At the same time, these questions are also frequent visitors ...

Shell script operates in the same way as interpretive language. If you have a language foundation, it is very easy to learn shell script. However, shell is different from common languages. Some common functions need to be realized by combining some commands in shell Tool recommendation The Shell does not seem to have a customized IDE. It is r ...

This article is forwarded from: blog.csdn.net/KH_FCJumpServer is an open source fortress machine owned by FIT2CLOUD. It is also the world's first open source fortress machine, using GNU GPL v2 0 open source protocol is an operation and maintenance security audit system conforming to 4A specification. It is developed in Python, complies with Web ...

Recently, the business has grown rapidly, which is also a big challenge for our background. The performance bottleneck of the core business interface encountered this time is not caused by a single problem, but a combination of several problems: after we solve one, we launch it, and then we find another performance bottleneck. This is also my l ...

catalogue Define class Creating and working with objects Object oriented pillar @property decorator __ slots__ magic Static methods and class methods Relationships between classes Inheritance and polymorphism Define class In Python, you can use the class keyword to define a class, and then define methods in the class through the prev ...

preface 10 wonderful Python libraries, I was stunned after reading! Let's start happily~ development tool Python version: 3.6.4 Related modules: socket module; textblob module; pygame module; pyqrcode module; pyshorteners module; Google trans module; pendulum module; fabulous module; pywebview module; Environment construction ...