Python - yield

详细分析请移步这里

下附测试代码和结果

计算机初始状态

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利用list进行迭代

def fabbylist(max):    n, a, b = 0, 0, 1    list = []    while n < max:        list.append(b)        a, b = b, a + b        n = n + 1    return listif __name__ == "__main__":    max = 1e9    for i in fabbylist(max):        print i

从htop中可以看出内存占用一下子暴涨很多

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利用yield进行迭代

def fabbyyield(max):    n, a, b = 0, 0, 1    while n < max:        yield b        a, b = b, a + b        n = n + 1if __name__ == "__main__":    max = 1e9    for i in fabbyyield(max):        print i

内存的占用变化处于正常范围

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