键盘输入字符串，interval是字符间输入时间间隔，单位"秒"

def Type_string(self, text, interval = 0, dl = 0):
        """键盘输入字符串，interval是字符间输入时间间隔，单位"秒"
        """
        self.Delay(dl)
        self.keyboard.type_string(text, interval)