code: def shell(config, type_):
      
  
      # Imported here because we don't want to trigger an import from anything
      # but warehouse.cli at the module scope.
      from warehouse.db import Session
  
      if type_ is None:
          type_ = autodetect()
  
      runner = {"bpython": bpython, "ipython": ipython, "plain": plain}[type_]
  
      session = Session(bind=config.registry["sqlalchemy.engine"])
  
      try:
          runner(config=config, db=session)
      except ImportError:
          raise click.ClickException(
              "The {!r} shell is not available.".format(type_)
          ) from None
docs: Open up a Python shell with Warehouse preconfigured in it.