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Pasted by rudsonalves

Description função para download de arquivos da rede

On Monday 08 Feb 08:57

Language Python

Url http://paste.ideaslabs.com/show/XDbYw5Fh8k

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  1. import os
  2. import sys
  3. import urllib
  4. import time
  5.  
  6. # Characters
  7. ESC=chr(27)
  8.  
  9. # download a file
  10. def download(url, style = 'quiet'):
  11.     try:
  12.         wget = urllib.urlopen(url)
  13.     except IOError:
  14.         raise IOError, '%s not found...' % url
  15.  
  16.     ESC = chr(27)
  17.  
  18.     # error mensage and error status. error_msg is 0 to download ok
  19.     error_msg = ''
  20.     status = 0
  21.  
  22.     size =  wget.info()['Content-Length']
  23.     if size.isdigit():
  24.         size = int(size)
  25.     else:
  26.         size = 0
  27.  
  28.     fout = file(os.path.basename(url), 'w')
  29.  
  30.     total = 0
  31.     start_time = time.time()
  32.     frist = True
  33.  
  34.     try:
  35.         for line in wget:
  36.             total += len(line)
  37.             fout.write(line)
  38.  
  39.             if style == 'bar':
  40.                 curr_time = time.time()
  41.                 if size != 0:
  42.                     per = (100*total)/size
  43.                     speed = float(total)/(curr_time - start_time)
  44.                     remain = (size - total)/speed
  45.                 else:
  46.                     per = 100
  47.                     speed = 0
  48.                     remain = 0
  49.                 bar = '#'*int(per*.60) + '>' + ' '*60
  50.                 str_out = '[' + bar[:60] + '] %s    ' % human_bytes(total)
  51.                 if not frist:
  52.                     sys.stdout.write(ESC + '[2A')
  53.                 else:
  54.                     print 'Download: %s     Size: %s    ' % (os.path.basename(url), \
  55.                                                             human_bytes(size))
  56.                     frist = False
  57.  
  58.                 print 'Speed: %s/s        Remain: %s    ' % (human_bytes(int(speed)), \
  59.                                                         human_time(int(remain)))
  60.                 print str_out
  61.             elif style == 'quiet':
  62.                 pass
  63.             else:
  64.                 print 'Donwload %s of %s' % (human_bytes(total), human_bytes(size))
  65.  
  66.     except Exception, error_msg:
  67.         # status is 1 for any error. error_msg return de python error message
  68.         status = 1
  69.  
  70.     if size != 0 and size != total:
  71.         status = 1
  72.         error_msg = 'The downloaded size of the file does not match the source'
  73.  
  74.     fout.close()
  75.  
  76.     return status, error_msg