code: def fromFile(cls, person, inputFile, format):
          
          body = cls.makeThumbnail(inputFile, person, format, smaller=False)
          inputFile.seek(0)
          smallerBody = cls.makeThumbnail(
              inputFile, person, format, smaller=True)
  
          ctype = u'image/' + format
  
          self = person.store.findUnique(
              cls, cls.person == person, default=None)
          if self is None:
              self = cls(store=person.store,
                         person=person,
                         type=ctype,
                         body=body,
                         smallerBody=smallerBody)
          else:
              self.body = body
              self.smallerBody = smallerBody
              self.type = ctype
          return self
docs: Create a L{Mugshot} item for C{person} out of the image data in
          C{inputFile}, or update C{person}'s existing L{Mugshot} item to
          reflect the new images.
  
          @param inputFile: An image of a person.
          @type inputFile: C{file}
  
          @param person: The person this mugshot is to be associated with.
          @type person: L{Person}
  
          @param format: The format of the data in C{inputFile}.
          @type format: C{unicode} (e.g. I{jpeg})
  
          @rtype: L{Mugshot}