📚 What is a Class?
In object-oriented programming, a class is like a blueprint or a template for creating objects. It defines the attributes (data) and behaviors (methods) that the objects of that class will have.
🧱 What is an Object?
An object is a specific instance of a class. It's a concrete realization of the blueprint defined by the class. Think of it as a house built from a blueprint.
🆚 Class vs. Object: Key Differences
Here's a table that highlights the main distinctions:
| Feature |
Class |
Object |
| Definition |
Blueprint or template |
Instance of a class |
| Memory Allocation |
No memory is allocated when a class is defined. |
Memory is allocated when an object is created. |
| Physical Existence |
Logical entity. |
Physical entity. |
| Creation |
Created once in a program. |
Created multiple times. |
| Example |
`class Dog:` |
`my_dog = Dog()` |
🔑 Key Takeaways
- 📌 Definition: A class defines the structure, while an object is a specific instance of that structure.
- 💾 Memory: Objects consume memory; classes do not (until objects are created).
- ⏱️ Lifecycle: A class is defined once, whereas you can create many objects from a single class.
- 🧮 Usage: Classes are used to organize code and create reusable components, objects are used to represent real-world entities in your program.