Dataclasses create init and call post_init

• __init__ is implemented and that's how the attributes are initialized
• __post_init__ is called after __init__ to allow for further initializations

from dataclasses import dataclass

@dataclass
class Point():
    x : float
    y : float
    name : str

    def __post_init__(self):
        print(f"In post init: {self.name}")

from shapes import Point

p1 = Point(2, 3, 'left')