code: def require(request):
      
      try:
          request = request.split(".")
      except AttributeError:
          pass
      request = [int(x) for x in request]
  
      provide = list(__version)
  
      if request > provide:
          raise AssertionError("gtkmvc3 required version %s, found %s" % (
              request, provide))
docs: Raise :exc:`AssertionError` if gtkmvc3 version is not compatible.
  
      *request* a dotted string or iterable of string or integers representing the
      minimum version you need. ::
  
       require("1.0")
       require(("1", "2", "2"))
       require([1,99,0])
  
      .. note::
  
         For historical reasons this does not take all API changes into account.
         Some are caught by the argument checks in View and Controller
         constructors.