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To perform operator overloading, Python provides some special function or magic function that is automatically invoked when it is associated with that particular operator. For example, when we use + operator, the magic method __add__ is automatically invoked in which the operation for + operator is defined. Overloading binary + operator in Python:
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BetaLet us first discuss operators, operands, and their behavior before diving into the operator overloading. Operators and Operands in Python. Special symbols in Python that we use to perform various operations on objects are called Operators. The objects on which operations are performed are called Operands. We say objects because everything is ...
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BetaOperator Overloading is the phenomenon of giving alternate/different meaning to an action performed by an operator beyond their predefined operational function. Operator overloading is also called Operator Ad-hoc Polymorphism. Python operators work for built-in classes. But the same operator expresses differently with different types.
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BetaNote that though there is a proposal, logical operators cannot be overloaded in Python as of now. Method Names for Operator Overloading. There are specific method names for operator overloading in Python. It is a unique name for each operator. The user can provide a custom definition for the method with that name inside a user-defined class.
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BetaIn this example, the __add__ method is defined to handle the + operator for Vector objects. When v1 + v2 is executed, the __add__ method is called, which returns a new Vector object representing the sum of the vectors.. Overloading Comparison Operators. Now let’s see how to overload comparison operators. We’ll extend our Vector class to include equality (==) and less than (<) comparisons.
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BetaThe operator overloading in Python means provide extended meaning beyond their predefined operational meaning. Such as, we use the "+" operator for adding two integers as well as joining two strings or merging two lists. We can achieve this as the "+" operator is overloaded by the "int" class and "str" class.
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BetaOperator Overloading in Python. Python allows operator overloading, which means that we can define how operators like +, -, *, and others behave for user-defined classes. This allows objects of custom classes to respond to operators in a meaningful way, just like built-in types such as integers and lists.
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BetaCustomized Logic: Operator Overloading in Python allows you to implement logic specific to your class using Boolean operators. This customization can lead to more intuitive and expressive code. Readability : By overloading Boolean operators, you can create code that reads more like natural language, making it easier to understand the intent of the operations.
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BetaAs we know, the + operator can perform addition on two numbers, merge two lists, or concatenate two strings.. With some tweaks, we can use the + operator to work with user-defined objects as well. This feature in Python, which allows the same operator to have different meanings depending on the context is called operator overloading.
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BetaSeamless Compatibility: By embracing operator overloading, custom objects harmonize with existing Python code utilizing built-in operators, ensuring smooth integration within broader codebases. Also read: 15 Best Python Books For You. Implementing Operator Overloading in Python. Here are the ways to implement operator overloading in Python:
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