添加通用异常处理程序：
request = urllib2.Request('http://www.example.com', postBackData, { 'User-Agent' : 'My User Agent' })try: response = urllib2.urlopen(request)except urllib2.HTTPError, e: checksLogger.error('HTTPError = ' + str(e.pre))except urllib2.URLError, e: checksLogger.error('URLError = ' + str(e.reason))except httplib.HTTPException, e: checksLogger.error('HTTPException')except Exception: import traceback checksLogger.error('generic exception: ' + traceback.format_exc())
