class Airplane: def_init_ (self,the_tail_number): self.tail_number = the_tail_number self.altitude = 0 self.speed = 0

def increase_speed(self): self.speed += 20

def decrease_speed (self): if self.speed < 20: self.speed = 0

else: self.speed -= 20

def increase_altitude(self): self.altitude += 500

def decrease_altitude(self): if self.altitude < 500: self.altitude = 0 else: self.altitude -= 500 def_str_(self): return f"{self.tail_number} {self.speed} {self.altitude}"

what is the output for this ? I am not able to find it