[Python-Dev] Re: PEP 622: Structural Pattern Matching

def whereis(point):

match point:
    case MovingPoint(0, 0):
        print("Origin")
    case MovingPoint(0, y):
        print(f"Y={y}")
    case MovingPoint(x, 0):
        print(f"X={x}")
    case MovingPoint(1, 1):
        print("Diagonal at units")

case MovingPoint():

        print("Somewhere else")
    case _:
        print("Not a point")

What is the expected/intended behavior or this kind of point. Both "What matches?" and "What is the value of point.x and point.y afterwards?"

class MovingPoint: def __init__(self, x, y): self._x = x self._y = y

@property def x(self): x = self._x self._x +=1 return x

@property def y(self): y = self._y self._y += 1 return y

point = MovingPoint(0, 0) whereis(point)