code: def parse_environment_file_list(names, world_size=(60, 60)):
      
  
      # Convert single file to list if necessary
      try:
          names[0] = names[0]
      except:
          names = [names]
  
      envs = []
      for name in names:
          envs.append(parse_environment_file(name, world_size))
  
      return envs
docs: Extract information about spatial resources from all environment files in
      a list.
  
      Arguments:
      names - a list of strings representing the paths to the environment files.
      world_size - a tuple representing the x and y coordinates of the world.
                   (default: 60x60)
  
      Returns a dictionary in which the keys are filenames and the values are
      list of lists of sets indicating the set of resources
      available at each x,y location in the Avida grid for that environment.