new_contents: '''Quick and dirty script to generate vs.payload blocks for a set of URLs.
  
  Usage:
      make_payload.py URL [URL ...]
  
  
  '''
  
  __author__ = 'Steve Dower <steve.dower@microsoft.com>'
  __version__ = '0.1'
  
  import hashlib
  import os
  import urllib.request
  import sys
  
  for u in sys.argv[1:]:
      is_temp = False
      if os.path.isfile(u):
          p = u
          name = None
      else:
          p, r = urllib.request.urlretrieve(u)
          try:
              name = r.get_filename()
          except:
              name = None
          is_temp = True
  
      if not name:
          try:
              _, name = os.path.split(u)
          except:
              try:
                  _, name = os.path.split(p)
              except:
                  name = '<unknown>'
  
      f_len = 0
      f_hash = hashlib.sha256()
      with open(p, 'rb') as f:
          data = f.read(1024 * 1024)
          while data:
              f_len += len(data)
              f_hash.update(data)
              data = f.read(1024 * 1024)
  
      if is_temp:
          try:
              os.unlink(p)
          except:
              pass
  
      print(f'  vs.payload size={f_len}')
      print(f'             url={u}')
      print(f'             fileName={name}')
      print(f'             sha256={f_hash.hexdigest()}')
      print()
  
subject: Add MSI generating tool for python updating