class_docstr: Test Class for OpenAI Integration Testing
class_docstr_tok: ["Test","Class","for","OpenAI","Integration","Testing"]
docstr: Retrieve OpenAI API key from environment variables
docstr_tok: ["Retrieve","OpenAI","API","key","from","environment","variables"]
code: def get_api_key():
      """Retrieve OpenAI API key from environment variables"""
      return os.environ.get("OPENAI_API_KEY")
  
imports: import os
  import time
  import pytest
  import pandas
  from unittest.mock import patch
  from mindsdb_sql import parse_sql
  from mindsdb.integrations.handlers.openai_handler.openai_handler import OpenAIHandler
  from ..executor_test_base import BaseExecutorTest
label_desc: Use image node_id 1 for calling the TestOpenAI obj's underlying member method code with example usage: obj.get_api_key() and returns: os