(self, generations)
Sets the generation frequency supposed to migrate
      and receive individuals.

      :param generations: the number of generations
Sets the generation frequency supposed to migrate
      and receive individuals.
Sets the generation frequency supposed to migrate and receive individuals .
def setMigrationRate(self, generations):
      """ Sets the generation frequency supposed to migrate
      and receive individuals.

      :param generations: the number of generations
      """
      self.nMigrationRate = generations
def setMigrationRate ( self , generations ) : self . nMigrationRate = generations