class CorporateGovernance:
    """
    #### A class representing a corporate governance object that describes the systems and processes by which a company is directed and controlled.

    Features:
    - Board of directors: Corporate governance typically involves a board of directors that oversees the management of the company and ensures that it is acting in the best interests of its stakeholders.
    - Transparency: Corporate governance requires transparency in the company's decision-making and financial reporting processes.
    - Accountability: Corporate governance establishes clear lines of accountability for the company's performance and behavior.
    - Ethics and values: Corporate governance promotes ethical behavior and a values-driven approach to decision-making.
    
    Args:
        -board_of_directors (bool): Whether the company has a board of directors.
        -transparency (bool): Whether the company operates with transparency in decision-making and financial reporting.
        -accountability (bool): Whether the company has clear lines of accountability for its performance and -behavior.
        -ethics_and_values (bool): Whether the company promotes ethical behavior and values-driven decision-making.
        
    Attributes:
        - governance_description (str): A description of the corporate governance structure.
    """

    def __init__(self,independent, board_of_directors, transparency, accountability, ethics_and_values):
        self.board_of_directors = board_of_directors
        self.transparency = transparency
        self.accountability = accountability
        self.ethics_and_values = ethics_and_values
        self.governance_description = None
        self._independent = independent
        self._independent.attach(self)
        self._dependents = []
    def attach(self, dependent):
        self._dependents.append(dependent)
    def detach(self, dependent):
        self._dependents.remove(dependent)
    def notify(self):
        for dependent in self._dependents:
            dependent.update()
    def update(self):
        # 观察者收到通知后需要执行的操作
        print("Received notification from subject.")
    def describe_corporate_governance(self):
        """
        Describes the corporate governance structure.

        Returns:
            str: A description of the corporate governance structure.
        """
        description = "The corporate governance structure of the company includes "
        if self.board_of_directors:
            description += "a board of directors that provides oversight and guidance to management. "
        else:
            description += "no board of directors. "
        if self.transparency:
            description += "The company operates with transparency in decision-making and financial reporting. "
        else:
            description += "The company lacks transparency in decision-making and financial reporting. "
        if self.accountability:
            description += "There are clear lines of accountability for the company's performance and behavior. "
        else:
            description += "The company lacks clear lines of accountability for its performance and behavior. "
        if self.ethics_and_values:
            description += "The company promotes ethical behavior and values-driven decision-making. "
        else:
            description += "The company does not prioritize ethics or values in decision-making. "
        self.governance_description = description
        return self.governance_description
