406         self.tempfile = temp

   406         self.tempfile = temp

   407 

   407 

   408         with os.fdopen(fdtemp, 'wb') as fptemp:

   408         with os.fdopen(fdtemp, 'wb') as fptemp:

   409             fptemp.write(header)

   409             fptemp.write(header)

   410             while True:

   410             while True:

   412                 if not chunk:

   412                 if not chunk:

   413                     break

   413                     break

   414                 fptemp.write(chunk)

   414                 fptemp.write(chunk)

   415 

   415 

   416         return self.vfs.open(self.tempfile, mode=b"rb")

   416         return self.vfs.open(self.tempfile, mode=b"rb")