李小延: 真是这个问题，前面不要加提示信息。感谢分享

m0_59940794: 我也debug了半天呜呜呜

Chloe_888: 我的也是一直报错，咨询了高手才发现是少写了个下划线。超级难发现的[code=python] class Student: def _init_(self,name,grade,subject): #这里少了下划线，注意和下面的__init__对比 self.name=name self.grade=grade self.subject=subject def do_work(self,time): if self.grade >3 and time>2: return True elif self.grade 0.5: return True else: return False class Teacher: def __init__(self,name,subject): self.name=name self.subject=subject def evaluate(self,result=True): if result: return "You are great." else: return "You should work hard." stu_zhang = Student('Zhang', 5,'Math') tea_wang = Teacher('Wang','Math') Teacher_said = tea_wang.evaluate(stu_zhang.do_work(1)) print("Teacher{0} said:{1},{2}".format(tea_wang.name,stu_zhang.name,Teacher_said)) [/code]

头发茂密hhh: 本人犯的错误：空格问题，创建对象时和def对齐了，应该顶头，不然就是在类里创建对象了

振华OPPO: 那不也是被整除嘛