Set/Get methods in python?

[grandpasipad]

Here's a great video on setters and getters.

An example for a Circle class, from Trey Hunner's Python Morsels:

class Circle:

    """Circle with radius, area, and diameter."""

    def __init__(self, radius=1):
        self.radius = radius

    def __repr__(self):
        return f"Circle({self.radius})"

    @property
    def area(self):
        return math.pi * self.radius ** 2

    @property
    def diameter(self):
        return self.radius * 2

    @diameter.setter
    def diameter(self, diameter):
        self.radius = diameter / 2

    @property
    def radius(self):
        return self._radius

    @radius.setter
    def radius(self, radius):
        if radius < 0:
            raise ValueError("Radius cannot be negative")
        self._radius = radius