code: def batch(backend, requester_pays_project=None):
      return Batch(
          backend=backend, requester_pays_project=requester_pays_project
      )
  
imports: from typing import AsyncIterator
  import os
  import pytest
  import subprocess
  import tempfile
  from hailtop import pip_version
  from hailtop.batch import Batch, LocalBackend, ResourceGroup
  from hailtop.batch.resource import JobResourceFile
  from hailtop.batch.utils import concatenate
label_desc: Use image node_id 1 for calling a global function with example usage: batch(backend, requester_pays_project) and returns: Batch