Python套接字超时

我在启动时运行一个脚本，并持续每秒用Python编写一个脚本。它在有限的时间内工作良好（似乎变化约5/10分钟），然后产生以下错误。

我还没有尝试更改睡眠时间，因为这是一个"测试"脚本，但我将使用必须每秒运行的脚本，以便找到正确的方法。

谷歌似乎没有给出什么答案，也许我用错了术语，但我不确定它的睡眠时间可能是IP ping失败？

巨蟒

import time, urllib2
def internet_on():
    try:
        response=urllib2.urlopen('http://64.233.160.94',timeout=1)
        return '<img class="right" src="networkon.png" width="32" height="32">'
    except urllib2.URLError as err: pass
    return '<img class="right" src="networkoff.png" width="32" height="32">'
output = internet_on()    
f = open('/var/www/html/viv/wifiout.html', 'w')
print >> f, output
f.close()
time.sleep(1)
while True:
    internet_on()

HTML

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Vivarium Enviroment Control Centre</title>
<link rel="stylesheet" href="style.css">
<script src="https://code.jquery.com/jquery-1.12.0.min.js"></script>
<script type="text/javascript">
    function updateTime() {
        var currentTime = new Date();
        var hours = currentTime.getHours();
        var minutes = currentTime.getMinutes();
        var seconds = currentTime.getSeconds();
        if (minutes < 10){
            minutes = "0" + minutes;
        }
        if (seconds < 10){
            seconds = "0" + seconds;
        }
        var v = hours + ":" + minutes + ":" + seconds + " ";
        if(hours > 11){
            v+="PM";
        } else {
            v+="AM"
        }
        setTimeout("updateTime()",1000);
        document.getElementById('time').innerHTML=v;
    }
  $("document").ready(function(){
        updateTime();
        setInterval(function(){
          $("#wifi").load('wifiout.html');
        },1000);
      });
function changeStatus() {
    var image = document.getElementById('lightStatus');
    if (image.src.match("lightoff")) {
        image.src = "lighton.png";
    } else {
        image.src = "lightoff.png";
    }
}
</script>
</head>
<body>
<div id="topbar">
    <span id="time"></span>
    <span id="wifi"></span>
    <img id="lightStatus" class="right" onclick="changeStatus()" src="lightoff.png" width="32" height="32">
</div>
</body>
</html>

运行一段时间后抛出错误

pi@Vivarium:~ $ sudo python /home/pi/Desktop/wifi.py
Traceback (most recent call last):
  File "/home/pi/Desktop/wifi.py", line 17, in <module>
    internet_on()
  File "/home/pi/Desktop/wifi.py", line 8, in internet_on
    urllib2.urlopen('http://64.233.160.94',timeout=1)
  File "/usr/lib/python2.7/urllib2.py", line 154, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python2.7/urllib2.py", line 437, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 550, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 469, in error
    result = self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 409, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 656, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "/usr/lib/python2.7/urllib2.py", line 437, in open
    response = meth(req, response)
  File "/usr/lib/python2.7/urllib2.py", line 550, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python2.7/urllib2.py", line 469, in error
    result = self._call_chain(*args)
  File "/usr/lib/python2.7/urllib2.py", line 409, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 656, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "/usr/lib/python2.7/urllib2.py", line 431, in open
    response = self._open(req, data)
  File "/usr/lib/python2.7/urllib2.py", line 449, in _open
    '_open', req)
  File "/usr/lib/python2.7/urllib2.py", line 409, in _call_chain
    result = func(*args)
  File "/usr/lib/python2.7/urllib2.py", line 1227, in http_open
    return self.do_open(httplib.HTTPConnection, req)
  File "/usr/lib/python2.7/urllib2.py", line 1200, in do_open
    r = h.getresponse(buffering=True)
  File "/usr/lib/python2.7/httplib.py", line 1073, in getresponse
    response.begin()
  File "/usr/lib/python2.7/httplib.py", line 415, in begin
    version, status, reason = self._read_status()
  File "/usr/lib/python2.7/httplib.py", line 371, in _read_status
    line = self.fp.readline(_MAXLINE + 1)
  File "/usr/lib/python2.7/socket.py", line 476, in readline
    data = self._sock.recv(self._rbufsize)
socket.timeout: timed out

试试这个：

import time, urllib2
def internet_on():
    returnValue = '<img class="right" src="networkon.png" width="32" height="32">'
    try:
        response=urllib2.urlopen('http://64.233.160.94',timeout=1)
    except:
        returnValue = '<img class="right" src="networkoff.png" width="32" height="32">'
    return returnValue

while True:
    output = internet_on()
    with open('/var/www/html/viv/wifiout.html', 'w') as f:
        f.write(output)
    time.sleep(5)

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