code: def delete_db(uri, **create_engine_kwargs):
      """Deletes database if it exists.
  
      Args:
        uri: Database connection uri.
        **create_engine_kwargs: Keyword args passed to sqlalchemy.create_engine method.
      Returns:
        SQLAlchemy engine.
      """
  
      engine = create_engine(uri, **create_engine_kwargs)
      if database_exists(engine.url):
          drop_database(engine.url)
      return engine
  
imports: from sqlalchemy import create_engine
  from sqlalchemy_utils import database_exists, drop_database, create_database
  from .None import schema
label_desc: Use image node_id 1 for calling a global function with example usage: delete_db(uri) and returns: engine