code: def generate_driver_url(url, driver, query_str):
      url = _format_url(url, driver, None)
  
      try:
          url.get_dialect()
      except exc.NoSuchModuleError:
          return None
      else:
          return url
  
imports: import os
  import re
  from ...None import exc
  from ...engine import url
  from ...testing.provision import create_db
  from ...testing.provision import drop_db
  from ...testing.provision import follower_url_from_main
  from ...testing.provision import generate_driver_url
  from ...testing.provision import log
  from ...testing.provision import post_configure_engine
  from ...testing.provision import run_reap_dbs
  from ...testing.provision import stop_test_class_outside_fixtures
  from ...testing.provision import temp_table_keyword_args
  from ...testing.provision import upsert
label_desc: Use image node_id 2 for calling a global function with example usage: generate_driver_url(url, driver, query_str) and returns: url, None