25 lines
712 B
Python
25 lines
712 B
Python
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from scipy.stats import trim1
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if __name__ == "__main__":
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items = [1, 2, 3]
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items = iter(items)
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# 如果需要访问可迭代对象中的元素，可以使用next函数
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while True:
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item = next(items, None)
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if item is not None:
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print(item)
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else:
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break
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# next函数的第一个参数是一个可迭代对象，第二个参数是None，是没有元素的时候的返回值
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# 如果不限制迭代器在没有元素后的返回值，迭代器在迭代结束后会抛出一个StopIteration的错误
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while True:
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try:
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item = next(items)
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except StopIteration:
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print("没东西了")
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break
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