Default constructor in python learn coding
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certainly! in python, a constructor is a special method invoked when an object is created from a class. the default constructor is a constructor that does not take any arguments (other than `self`), and it initializes the object with default values. in python, if you do not define any constructor in your class, a default constructor is provided automatically.
understanding default constructor
1. **definition**: a default constructor is a constructor without parameters. it initializes object attributes to default values.
2. **usage**: it is used when you want to create an object without explicitly providing any parameters during the instantiation.
example of a default constructor
let's see an example to illustrate how a default constructor works in python.
explanation of the code
1. **class definition**: we define a class named `dog`.
2. **default constructor (`__init__` method)**:
- the `__init__` method is the constructor that initializes the object.
- here, we set two attributes: `name` and `age` to default values ("buddy" and `2`, respectively).
3. **method to display information**: we define a method `display_info` to print the name and age of the dog.
4. **creating an object**: we create an instance of the `dog` class named `my_dog`, which automatically invokes the default constructor.
5. **displaying info**: we call the `display_info` method on `my_dog` to show the default values.
output
when you run the above code, the output will be:
customizing the constructor
you can also define a constructor that takes parameters to allow for custom initialization:
output
summary
- a default constructor is a special method in a class that initializes object attributes with default values.
- you can create objects of the class using the default constructor without providing any arguments.
- you can also define a constructor that allows optional parameters to customize the initialization process.
this is a fundamental ...
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