将cast应用于类型化球拍中的动态要求函数

class Racket:
    def __init__(self, brand: str, weight: float):
        self.brand = brand
        self.weight = weight

class TennisRacket(Racket):
    def __init__(self, brand: str, weight: float, grip_size: int):
        super().__init__(brand, weight)
        self.grip_size = grip_size

def process_racket(racket: Racket):
    if isinstance(racket, TennisRacket):
        print(f"Processing Tennis Racket: {racket.brand}, Weight: {racket.weight}, Grip Size: {racket.grip_size}")
    else:
        print(f"Processing Generic Racket: {racket.brand}, Weight: {racket.weight}")

def safe_cast(racket: Racket, target_type):
    try:
        return target_type(racket)
    except TypeError:
        print(f"Failed to cast {type(racket)} to {target_type}")
        return None