Question

我有一个Python脚本，可以查看已经通过Beautiful Soup查找文本术语的XML文件。然后我遍历到我想要提取的值并返回字符串。这有效但因为我在程序主循环中添加了对此函数的调用，我最终得到了MemoryError问题。查看Windows任务管理器我发现每次调用后内存都没有释放，系统内存不足。问题似乎是“返回myLink.string＆＃39;线。这是否包含对内存中对象的引用，如何绕过它？

def FindUptime(soup):
    link = soup.find(text=re.compile("Uptime"))
    if link:
        myLink = link.parent
        myLink = myLink.next_sibling
        if myLink.string == "Up:":
            myLink = myLink.next_sibling
            myLink = myLink.next_element
        else:
            print "Can't find Up: term"
        return myLink.string
    else:
        print "Can't find Uptime"
        return ""

由

调用

readings[sensorIds[i][SENSOR_NAME]] = FindUptime(soup)

Answer 1

修改为......

def FindUptime(soup):
    link = soup.find(text=re.compile("Uptime"))
    if link:
        myLink = link.parent
        myLink = myLink.next_sibling
        if myLink.string == "Up:":
            myLink = myLink.next_sibling
            myLink = myLink.next_element
        else:
            print "Can't find Up: term"
        uptime = str(myLink.string) # added
        return uptime
    else:
        print "Can't find Uptime"
    return ""

为什么这个Python函数在执行后不释放内存？

1 个答案: