如何为受约束的函数创建数据(或最好是newtype)包装器？

# 创建一个数据包装器
class ConstrainedFunctionWrapper:
    def __init__(self, constrained_function):
        self.constrained_function = constrained_function

    def call_constrained_function(self, *args, **kwargs):
        # 对输入进行处理
        processed_args = process_input(args)
        processed_kwargs = process_input(kwargs)

        # 调用受约束函数
        result = self.constrained_function(*processed_args, **processed_kwargs)

        # 对输出进行处理
        processed_result = process_output(result)

        return processed_result

# 示例受约束函数
def constrained_function(input_data: str) -> int:
    # 执行一些操作
    return len(input_data)

# 使用示例
wrapper = ConstrainedFunctionWrapper(constrained_function)
result = wrapper.call_constrained_function("example")

print(result)  # 输出：7