old_contents: import urllib2  # needed for functions,classed for opening urls.
  
  url = raw_input("enter the url needed for downloading file(pdf,mp3,zip...etc)\n");
  
  usock = urllib2.urlopen(url)  # function for opening desired url
  file_name = url.split('/')[
      -1]  # Example : for given url "www.cs.berkeley.edu/~vazirani/algorithms/chap6.pdf" file_name will store "chap6.pdf"
  f = open(file_name, 'wb')  # opening file for write and that too in binary mode.
  file_size = int(usock.info().getheaders("Content-Length")[0])  # getting size in bytes of file(pdf,mp3...)
  print
  "Downloading: %s Bytes: %s" % (file_name, file_size)
  
  downloaded = 0
  block_size = 8192  # bytes to be downloaded in each loop till file pointer does not return eof
  while True:
      buff = usock.read(block_size)
      if not buff:  # file pointer reached the eof
          break
  
  downloaded = downloaded + len(buff)
  f.write(buff)
  download_status = r"%3.2f%%" % (downloaded * 100.00 / file_size)  # Simple mathematics
  download_status = download_status + (len(download_status) + 1) * chr(8)
  print
  download_status, "done"
  
  f.close()
new_contents: import urllib2  # needed for functions,classed for opening urls.
  
  #url = raw_input("enter the url needed for downloading file(pdf,mp3,zip...etc)\n");
  url = 'http://phonondb.mtl.kyoto-u.ac.jp/raw_data/'
  
  usock = urllib2.urlopen(url)  # function for opening desired url
  file_name = url.split('/')[
      -1]  # Example : for given url "www.cs.berkeley.edu/~vazirani/algorithms/chap6.pdf" file_name will store "chap6.pdf"
  f = open(file_name, 'wb')  # opening file for write and that too in binary mode.
  file_size = int(usock.info().getheaders("Content-Length")[0])  # getting size in bytes of file(pdf,mp3...)
  print("Downloading: %s Bytes: %s" % (file_name, file_size))
  
  downloaded = 0
  block_size = 8192  # bytes to be downloaded in each loop till file pointer does not return eof
  while True:
      buff = usock.read(block_size)
      if not buff:  # file pointer reached the eof
          break
  
  downloaded = downloaded + len(buff)
  f.write(buff)
  download_status = r"%3.2f%%" % (downloaded * 100.00 / file_size)  # Simple mathematics
  download_status = download_status + (len(download_status) + 1) * chr(8)
  print(download_status, "done")
  
  f.close()
  
subject: change url varaible