python学习-迭代器
class MyNumbers: def __iter__(self): self.a = 1 return self def __next__(self): if self.a <=20: x = self.a self.a += 1 return x else: raise StopIteration myclass = MyNumbers() myiter = iter(myclass) for x in myiter: print(x)
class MyNumbers: def __iter__(self): self.a = 1 return self def __next__(self): if self.a <=20: x = self.a self.a += 1 return x else: raise StopIteration myclass = MyNumbers() myiter = iter(myclass) for x in myiter: print(x)
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