尝试编写不一致的机器人代码，以要求特定命令具有特定的角色

class Robot:
    def __init__(self):
        self.current_role = None
    
    def set_role(self, role):
        self.current_role = role
    
    def execute_command(self, command):
        if command == 'commandA':
            if self.current_role == 'roleX':
                self.roleX_function()
            else:
                self.default_function()
        elif command == 'commandB':
            if self.current_role == 'roleY':
                self.roleY_function()
            else:
                self.default_function()
        elif command == 'commandC':
            if self.current_role == 'roleZ':
                self.roleZ_function()
            else:
                self.default_function()
        else:
            self.default_function()
    
    def roleX_function(self):
        print("Executing role X function...")
    
    def roleY_function(self):
        print("Executing role Y function...")
    
    def roleZ_function(self):
        print("Executing role Z function...")
    
    def default_function(self):
        print("Executing default function...")

# 示例用法
robot = Robot()
robot.set_role('roleX')
robot.execute_command('commandA')  # 执行命令A，角色为X
robot.execute_command('commandB')  # 忽略命令B，角色不匹配
robot.set_role('roleY')
robot.execute_command('commandB')  # 执行命令B，角色为Y
robot.execute_command('commandA')  # 忽略命令A，角色不匹配