Jupyter Notebook (IPython)에서 셀 출력을 풍부하게 만듭니다.

Face() + Eye(35, 40) + Eye(65, 40) + Mouth(50, 75)

class Component():
    def __init__(self, items = None):
        self.items = items or [self]
    def __add__(self, target):
        return Component(self.items + target.items)
    def _repr_svg_(self):
        return ''.join([
            '<svg width="100" height="100">',
            *map(str, self.items),
            '</svg>'
        ])

class Face(Component):
    def __str__(self):
        return '<circle cx="50" cy="50" r="45" fill="none" stroke="black" stroke-width="1" />'

class Eye(Component):
    def __init__(self, x, y):
        super().__init__()
        self.x, self.y = x, y
    def __str__(self):
        return f'<circle cx="{self.x}" cy="{self.y}" r="5" fill="black" />'

class Mouth(Component):
    def __init__(self, x, y):
        super().__init__()
        self.x, self.y = x, y
    def __str__(self):
        return f'<path d="M{self.x} {self.y} l15 -5 h-30 Z" fill="none" stroke="black" stroke-width="1" />'