code: def create_items():
      vectors = [[1, 1, 1], [2, 2, 2], [1, 1, 2]]
      session = Session(engine)
      for i, v in enumerate(vectors):
          session.add(Item(id=i + 1, embedding=v))
      session.commit()
  
imports: import numpy
  from pgvector.sqlalchemy import Vector
  import pytest
  from sqlalchemy import create_engine, inspect, select, text, MetaData, Table, Column, Index, Integer
  from sqlalchemy.exc import StatementError
  from sqlalchemy.ext.asyncio import async_sessionmaker, create_async_engine
  from sqlalchemy.orm import declarative_base, mapped_column, Session
  from sqlalchemy.sql import func
label_desc: Use image node_id 1 for calling a global function with example usage: create_items() without return types