2018/11/19:
class Bird(object):
def init(self,sound):
self.sound = sound
print("my sound is:",sound)
def chirp(self):
print(self.sound)
def chirp_repeat(self,sound,n):
for i in range(n):
self.chirp(sound)
summer = Bird("ji")
summer.chirp_repeat("ji",10)
执行后一直报错,见下方截图:
修改后:
执行成功。 其中原因是什么,求解!