code: def dispatch_strict(self, stream, *args, **kwargs):
          
          for f, pat in self.functions:
              matched, matched_stream = self._match(stream, pat, 
                                                    {'strict': True}, {})
              if matched:
                  return f(matched_stream, *args, **kwargs)
  
          raise DispatchFailed()
docs: Dispatch to function held internally depending upon the value of stream.
  
          Matching on directories is strict. This means dictionaries will
          match if they are exactly the same.