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This article mainly introduces the relevant knowledge of Python how to achieve the agent mode, the content is detailed and easy to understand, the operation is simple and fast, and has a certain reference value. I believe you will gain something after reading this Python article on how to achieve the agent mode. Let's take a look at it.

Effect.

The agent model introduces a certain amount of adjustment space on the premise of meeting the basic needs of users. The so-called adjustment can be the increase or decrease of the content or the change of the timing. Through this adjustment to meet the additional demand.

RemoteProxy increases communication between processes and even devices so that objects can be accessed in the same way regardless of whether they are in the same process, thread, or device.

VirtualProxy adjusts the timing of the actual generation of objects and builds them in memory only when they are really necessary, thus maximizing space savings.

ProtectionProxy adds login or authentication processing to achieve access control without changing the proxied object.

No matter which kind of adjustment, the core function is unchanged.

Realize

In general, each instance needs to manage independent data in order to modify the contents of the data individually. For example, the following code:

When building an Client instance, the code needs to copy a subject object as its own data member each time. Otherwise, all instances use the same subject. The following is the result of the execution, representing the state after the object was created and an instance was modified.

First, the contents of the Subject class are transferred to RealSubJect, and Subject retains only the ability to define the interface; then a Proxy class is added to generate a copy of subject only when the data is modified.

You can see that when the content is the same, the same object is used, and when the content is different, different objects are used. Through the agent mode, on the one hand, it saves the additional memory space occupied by the content at the same time, on the other hand, it also realizes the independent management of different contents. The important thing is that this is done without awareness in the Client.

This is the end of the article on "how to implement the proxy pattern in Python". Thank you for reading! I believe you all have a certain understanding of the knowledge of "how to achieve the agent mode in Python". If you want to learn more, you are welcome to follow the industry information channel.

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