Python Class

Delete attributes from an instance in Python

`del`, a Python built-in function, deletes the instance's property. python class Account: def __init__(self, name): self.na...

Python class

What is Python class or what is class in programming language? When questioned "What is class?" or "Why do most programmers use class?", I alway...

Python hasattr() - How to check if the object or instance has an attribute or property

The `hasattr()` checks if the object or instance has an attribute. It is a [built-in function](/python-built-in) in Python. python class Us...

Python class @property

The @property method in Python class can be accessed as a property or attribute. python class Triangle: def __init__(self, width, he...

Python nested function and decorator - How to use a function that returns another function object

A Python function can return the function. python def f(): def g(): print('g() is called.') return g() f() # g()...

The difference of isinstance and type in Python

The `type()` and `isinstance()` are Python built-in functions that checks the type of an object. python class Food: pass i = isin...

Python staticmethod - The method called by the class and instance

The Python static method is declared by @staticmethod decorator. python class Account: def __init__(self, name): self.name ...

Python classmethod - Get the class name from the class or instance

The Python class method is declared by @classmethod decorator. python class Account: def __init__(self, name): self.name = ...

Python __str__ : How or when to use __str__ method

Python object (class instance) has `__str__` method that returns the information of a object as string, which is almost meaningless by defualt. ...

Private variables in Python Class: Difference of public and private attributes

Python class has public and private attributes like other languages. The name of private attribute starts with double underscores. python c...

Python __subclasses__ and how to get child class name from parent class

When a class has a parent class in Python, we can get the child class name from the parent class. python class Product: def __init__...

Get a class name in Python - How to use __class__ and __name__

Python instance (object) has the `__class__` attribute and it has the `__name__` attribute, which is the class name of an instance. python ...

Python overloading operator - Add, subtract, multiply objects using arithmetic operators

Python string can be added using plus symbol as if strings were numbers. You can define addition to class object using `__add__` function. p...

Python Class - Get dictionary of class instance (__dict__ and vars)

Python class instance has `__dict__` method. We can get the dictionary of class instance attributes as follow. python class Employee: ...