original_docstring: 
          Retrieve the density (vehicles per km) of every edges/lanes
          
docstring: Retrieve the density (vehicles per km) of every edges/lanes
docstring_tokens: Retrieve the density ( vehicles per km ) of every edges / lanes
code: def _get_density(self):
          """
          Retrieve the density (vehicles per km) of every edges/lanes
          """
          divider = traci.lane.getLength("N2TL_0") / 1000 #  derives the id of the first lane from the edge id (all lanes of an edge have the same length) and 1000 m -> km
          den_N = traci.edge.getLastStepVehicleNumber("N2TL") / divider
          den_S = traci.edge.getLastStepVehicleNumber("S2TL") / divider
          den_E = traci.edge.getLastStepVehicleNumber("E2TL") / divider
          den_W = traci.edge.getLastStepVehicleNumber("W2TL") / divider
          return den_N + den_S + den_E + den_W
code_tokens: def _get_density ( self ) : divider = traci . lane . getLength ( "N2TL_0" ) / 1000 den_N = traci . edge . getLastStepVehicleNumber ( "N2TL" ) / divider den_S = traci . edge . getLastStepVehicleNumber ( "S2TL" ) / divider den_E = traci . edge . getLastStepVehicleNumber ( "E2TL" ) / divider den_W = traci . edge . getLastStepVehicleNumber ( "W2TL" ) / divider return den_N + den_S + den_E + den_W
short_docstring: Retrieve the density (vehicles per km) of every edges/lanes
short_docstring_tokens: Retrieve the density ( vehicles per km ) of every edges / lanes
comment: """
          Retrieve the density (vehicles per km) of every edges/lanes
          """$SEP$#  derives the id of the first lane from the edge id (all lanes of an edge have the same length) and 1000 m -> km