code: def connect(
      evadb_dir: str = EvaDB_DATABASE_DIR, sql_backend: str = None
  ) -> EvaDBConnection:
      """
      Connects to the EvaDB server and returns a connection object.
  
      Args:
          evadb_dir (str): The directory used by EvaDB to store database-related content. Default is "evadb".
          sql_backend (str): Custom database URI to be used. We follow the SQLAlchemy database URL format.
              Default is SQLite in the EvaDB directory. See https://docs.sqlalchemy.org/en/20/core/engines.html#database-urls.
  
      Returns:
          EvaDBConnection: A connection object representing the connection to the EvaDB database.
  
      Examples:
          >>> from evadb import connect
          >>> conn = connect()
      """
  
      # As we are not employing a client-server approach for the Pythonic interface, the
      # host and port parameters are irrelevant. Additionally, for the EvaDBConnection, the
      # reader and writer parameters are not relevant in the serverless approach.
      evadb = init_evadb_instance(evadb_dir, custom_db_uri=sql_backend)
      init_builtin_functions(evadb, mode="release")
      return EvaDBConnection(evadb, None, None)
  
imports: import asyncio
  import multiprocessing
  import pandas
  from evadb.configuration.constants import EvaDB_DATABASE_DIR
  from evadb.database import EvaDBDatabase, init_evadb_instance
  from evadb.expression.tuple_value_expression import TupleValueExpression
  from evadb.functions.function_bootstrap_queries import init_builtin_functions
  from evadb.interfaces.relational.relation import EvaDBQuery
  from evadb.interfaces.relational.utils import try_binding
  from evadb.models.server.response import Response
  from evadb.models.storage.batch import Batch
  from evadb.parser.alias import Alias
  from evadb.parser.select_statement import SelectStatement
  from evadb.parser.utils import parse_create_function, parse_create_table, parse_create_vector_index, parse_drop_function, parse_drop_index, parse_drop_table, parse_explain, parse_insert, parse_load, parse_query, parse_rename, parse_show, parse_table_clause
  from evadb.server.command_handler import execute_statement
  from evadb.utils.generic_utils import find_nearest_word, is_ray_enabled_and_installed
  from evadb.utils.job_scheduler import JobScheduler
  from evadb.utils.logging_manager import logger
label_desc: Use image node_id 1 for calling a global function with example usage: connect(evadb_dir, sql_backend) and returns: EvaDBConnection