code: def add(self, v):
          "Add an individual to the population"
          self.population.append(v)
          self._current_popsize += 1
          v.position = len(self._hist)
          self._hist.append(v)
          self.bsf = v
          self.estopping = v
          self._density += self.get_density(vf add(self, v):
          "Add an individual to the population"
          self.population.append(v)
          self._current_popsize += 1
          v.position = len(self._hist)
          self._hist.append(v)
          self.bsf = v
          self.estopping = v
          self._density += self.get_density(v)
docs: Add an individual to the population