详解crifan的Python库：crifanLib.py

2.4. 网络方面的函数

#------------------------------------------------------------------------------
# manually download fileUrl then save to fileToSave
def manuallyDownloadFile(fileUrl, fileToSave) :
    isDownOK = False;
    downloadingFile = '';

    try :
        if fileUrl :
            # 1. find real address
            #print "fileUrl=",fileUrl;
            resp = urllib2.urlopen(fileUrl, timeout=gConst['defaultTimeout']);
            #print "resp=",resp;
            realUrl = resp.geturl(); # not same with original file url if redirect
            
            # if url is invalid, then add timeout can avoid dead
            respHtml = getUrlRespHtml(realUrl, useGzip=False, timeout=gConst['defaultTimeout']);
            
            isDownOK = saveBinDataToFile(respHtml, fileToSave);
        else :
            print "Input download file url is NULL";
    except urllib.ContentTooShortError(msg) :
        isDownOK = False;
    except :
        isDownOK = False;

    return isDownOK;
        

#if dstPicFile and downloadFile(curUrl, dstPicFile) : 
# urlretrieve in downloadFile is too slow while download QQ Space Picture
# so here use manuallyDownloadFile instead
if dstPicFile and manuallyDownloadFile(curUrl, dstPicFile) :
    # replace old url with new url