Previous: Introduction to OOP

Objects are everywhere, and therefore, it is very important to recognize elements, known as objects, from real-world situations. It is also important to understand how they can easily be translated into object-oriented code.

You will learn the principles of object-oriented paradigms.

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In OOP with Python, everything is an object.

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• Recognizing objects from nouns

For example, to develop a new simple application with the requirements: To calculate the areas and perimeters of squares, rectangles, circles, and ellipses.

The following seven functions would do the job:

• calculateSquareArea
• calculateRectangleArea
• calculateCircleArea
• calculateEllipseArea
• calculateSquarePerimeter
• calculateRectanglePerimeter
• calculateCirclePerimeter

⇒ Square, Rectangle, Circle, Eclipse are objects.

Each object supports two similar methods: Area and Perimeter.