Polymorphism is a core concept in Python object-oriented programming, referring to "one interface, multiple implementations", allowing for unified processing of different types of objects. 1. Polymorphism is implemented through method rewriting. Subclasses can redefine parent class methods. For example, the spoke() method of Animal class has different implementations in Dog and Cat subclasses. 2. The practical uses of polymorphism include simplifying the code structure and enhancing scalability, such as calling the draw() method uniformly in the graphical drawing program, or handling the common behavior of different characters in game development. 3. Python implementation polymorphism needs to satisfy: the parent class defines a method, and the child class overrides the method, but does not require inheritance of the same parent class. As long as the object implements the same method, this is called the "duck type". 4. Things to note include the maintenance

The digital asset market has attracted countless newcomers with its volatility and potential. If you are considering stepping into this field and making your first attempt at Anbi.com, it is crucial to understand the necessary basics. This guide will provide you with detailed introduction to the key steps for trading on Anbi.com from scratch, including account establishment, fund inbound, platform interface overview, and how to execute your first trading instructions. Mastering these basic skills is a prerequisite for participating in digital asset transactions safely and effectively.

Bitcoin is more suitable for long-term value investment and asset preservation, while Dogecoin is suitable for short-term trading and community-driven innovative applications. 1. Bitcoin was released by Satoshi Nakamoto in 2009, aiming to build a decentralized peer-to-peer digital payment system, which is known as "digital gold". Dogecoin was born in 2013 in the Internet meme culture. It was initially positioned as an interesting community currency, and then gradually became mainstream. 2. The total amount of Bitcoin is fixed at 21 million, and the output of new coins is reduced through the halving mechanism, which is scarce; Dogecoin adopts a continuous inflation model, with a fixed addition of about 5.2 billion coins each year, which is used to encourage miners to participate in and network maintenance. 3. The confirmation time of Bitcoin transactions is long, and the fees are significantly affected by network congestion; the Dogecoin block time is 1 minute, and the transaction speed is faster.

The digital asset market attracts global attention with its high volatility. In this environment, how to steadily capture returns has become the goal pursued by countless participants. Quantitative trading, with its dependence on data and algorithm-driven characteristics, is becoming a powerful tool to deal with market challenges. Especially in 2025, this time node full of infinite possibilities is combined with the powerful programming language Python to build an automated "brick-moving" strategy, that is, to use the tiny price spreads between different trading platforms for arbitrage, which is considered a potential way to achieve efficient and stable profits.

A class method is a method defined in Python through the @classmethod decorator. Its first parameter is the class itself (cls), which is used to access or modify the class state. It can be called through a class or instance, which affects the entire class rather than a specific instance; for example, in the Person class, the show_count() method counts the number of objects created; when defining a class method, you need to use the @classmethod decorator and name the first parameter cls, such as the change_var(new_value) method to modify class variables; the class method is different from the instance method (self parameter) and static method (no automatic parameters), and is suitable for factory methods, alternative constructors, and management of class variables. Common uses include:

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Decentralized exchanges (DEXs) have attracted attention in the cryptocurrency field in recent years. Unlike traditional centralized exchanges (CEX), DEX operates on blockchain and aims to provide a way to trade without trusting intermediaries. When a user trades on a DEX, the assets are usually kept in their wallet rather than stored in an escrow account on the exchange. This model brings unique security advantages, but it also comes with new challenges.

Parameters are placeholders when defining a function, while arguments are specific values ??passed in when calling. 1. Position parameters need to be passed in order, and incorrect order will lead to errors in the result; 2. Keyword parameters are specified by parameter names, which can change the order and improve readability; 3. Default parameter values ??are assigned when defined to avoid duplicate code, but variable objects should be avoided as default values; 4. args and *kwargs can handle uncertain number of parameters and are suitable for general interfaces or decorators, but should be used with caution to maintain readability.