if__name__=='__main__':trainfile='train.txt'url="https://s3-eu-west-1.amazonaws.com/kaggle-display-advertising-challenge-dataset/dac.tar.gz"print("download and extract starting...")download_file_and_uncompress(url)print("download and extract finished")count=0for_inio.open(trainfile,'r',encoding='utf-8'):count+=1print("total records: %d"%count)print("done")