具體分析如下：
    將這段代碼放入你的腳本中，類似：urllib.urlretrieve(getFile, saveFile, reporthook=report)
    第三個參數(shù)如下面的函數(shù)定義report，urlretrieve下載文件時會實時回調report函數(shù)，顯示下載進度
    def report(count, blockSize, totalSize):
    percent = int(count*blockSize*100/totalSize)
    sys.stdout.write("\r%d%%" % percent + ' complete')
    sys.stdout.flush()
    sys.stdout.write('\rFetching ' + name + '...\n')
    urllib.urlretrieve(getFile, saveFile, reporthook=report)
    sys.stdout.write("\rDownload complete, saved as %s" % (fileName) + '\n\n')
    sys.stdout.flush()