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python decorators - @property is a decorator

properties = things that extend dynamically

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@property can be used to create a dynamic instance variable, allowing you to have attributes that update when the source attributes are modified:

class Person:
    def __init__(self, fn, ln):
        self.fn = fn
        self.ln = ln

    @property
    def full_name(self):
        return f'{self.fn} {self.ln}'


>>> p = Person('Curt', 'Brun')
>>> p.full_name
'Curt Brun'

and a setter can be defined to allow modifications of the fn and ln by simply assigning a new full_name str:

    #...
    @full_name.setter
    def full_name(self, name):
        self.fn, self.ln = name.split()

>>> p.full_name = 'Joe Brun'
>>> p.fn
'Joe'
>>> p.ln
'Brun'

-> deleter

    #...
    @full_name.deleter
    def full_name(self):
        self.fn, self.ln = (None, None)

>>> (p.fn and p.ln) == None
True

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-> https://www.programiz.com/python-programming/property as alt to getters and setters

References:
- https://www.machinelearningplus.com/python/python-property/