我的 `break` 在 while True 循环中不起作用

Question

这是我Python脚本的一部分：

with open("/tmp/IpList.txt", "r+") as f:
    for ip in f:
        page = 1
        ip = ip.strip("\r\n")
        print ip
        while True:
            url = 'http://www.bing.com/search?q=ip%3a' + ip + '&qs=n&pq=ip%3a' + ip + '&sc=0-0&sp=-1&sk=&first=' + str(page) + '&FORM=PERE'
            print url
            with open("/tmp/content.txt", "a") as out:
                content = ContentFunc()
                if "<cite>" in content and "</cite>" in content:
                    out.write(content)
                    with open("/tmp/result.txt", "a") as result:
                        res = CiteParser()
                        result.write(res.encode('utf-8'))
                    page += 10
                else:
                    break

当IpList.txt里的IP地址用完后，它又会从第一个IP地址开始。为什么会这样呢？

谢谢...

Answer 1

我同意上面的说法，你可以使用：

with open("/tmp/IpList.txt", "r+") as f:
    for ip in f:
        page = 1
        ip = ip.strip("\r\n")
        print ip
        loop_going = True # New var <---------------
        while loop_going:
            url = 'http://www.bing.com/search?q=ip%3a' + ip + '&qs=n&pq=ip%3a' + ip + '&sc=0-0&sp=-1&sk=&first=' + str(page) + '&FORM=PERE'
            print url
            with open("/tmp/content.txt", "a") as out:
                content = ContentFunc()
                if "<cite>" in content and "</cite>" in content:
                    out.write(content)
                    with open("/tmp/result.txt", "a") as result:
                        res = CiteParser()
                        result.write(res.encode('utf-8'))
                    page += 10
                else:
                    loop_going = False # Set to false <---------------

Answer 2

你不需要使用while循环，把所有的IP地址放在一个列表里就可以了：

 with open("a.txt", "r+") as f:
    page = 1
    ips = [ip.strip("\r\n") for ip  in f]
    for ip in ips:
        url = 'http://www.bing.com/search?q=ip%3a' + ip + '&qs=n&pq=ip%3a' + ip + '&sc=0-0&sp=-1&sk=&first=' + str(page) + '&FORM=PERE'
        print url
        with open("/tmp/content.txt", "a") as out:
            content = ContentFunc()
            if "<cite>" in content and "</cite>" in content:
                out.write(content)
                with open("/tmp/result.txt", "a") as result:
                    res = CiteParser()
                    result.write(res.encode('utf-8'))
                page += 10