code: def lcopt_bw2_forwast_setup(use_autodownload=True, forwast_path=None, db_name=FORWAST_PROJECT_NAME, overwrite=False):        
      if use_autodownload:
          forwast_filepath = forwast_autodownload(FORWAST_URL)
      elif forwast_path is not None:
          forwast_filepath = forwast_path
      else:
          raise ValueError('Need a path if not using autodownload')
      if storage.project_type  == 'single':
          db_name = storage.single_project_name
          if bw2_project_exists(db_name):
              bw2.projects.set_current(db_name)
          else:
              bw2.projects.set_current(db_name)
              bw2.bw2setup()
      else:
          if db_name in bw2.projects:
              if overwrite:                                           
                  bw2.projects.delete_project(name=db_name, delete_dir=True)
              else:
                  print('Looks like bw2 is already set up for the FORWAST database - if you want to overwrite the existing version run lcopt.utils.lcopt_bw2_forwast_setup in a python shell using overwrite = True')
                  return False
          if not bw2_project_exists(DEFAULT_BIOSPHERE_PROJECT):
              lcopt_biosphere_setup()
          bw2.projects.set_current(DEFAULT_BIOSPHERE_PROJECT)
          bw2.create_core_migrations()
          bw2.projects.copy_project(db_name, switch=True)
      bw2.BW2Package.import_file(forwast_filepath)
      return True