# Basic Accuracy (/evals/accuracy/usage/basic)



<Steps>
  <Step title="Create a Python file">
    ```python title="basic.py"
    from typing import Optional

    from agno.agent import Agent
    from agno.eval.accuracy import AccuracyEval, AccuracyResult
    from agno.models.openai import OpenAIResponses
    from agno.tools.calculator import CalculatorTools

    evaluation = AccuracyEval(
        name="Calculator Evaluation",
        model=OpenAIResponses(id="gpt-5.2"),
        agent=Agent(
            model=OpenAIResponses(id="gpt-5.2"),
            tools=[CalculatorTools()],
        ),
        input="What is 10*5 then to the power of 2? do it step by step",
        expected_output="2500",
        additional_guidelines="Agent output should include the steps and the final answer.",
        num_iterations=3,
    )

    result: Optional[AccuracyResult] = evaluation.run(print_results=True)
    assert result is not None and result.avg_score >= 8
    ```
  </Step>

    <Step title="Set up your virtual environment">
      <CodeBlockTabs defaultValue="Mac">
        <CodeBlockTabsList>
          <CodeBlockTabsTrigger value="Mac">
            Mac
          </CodeBlockTabsTrigger>

          <CodeBlockTabsTrigger value="Windows">
            Windows
          </CodeBlockTabsTrigger>
        </CodeBlockTabsList>

        <CodeBlockTab value="Mac">
          ```bash
          uv venv --python 3.12
          source .venv/bin/activate
          ```
        </CodeBlockTab>

        <CodeBlockTab value="Windows">
          ```bash
          uv venv --python 3.12
          .venv\Scripts\activate
          ```
        </CodeBlockTab>
      </CodeBlockTabs>
    </Step>

  <Step title="Install dependencies">
    ```bash
    uv pip install -U openai agno
    ```
  </Step>

  <Step title="Export your OpenAI API key">
    <CodeBlockTabs defaultValue="Mac/Linux">
      <CodeBlockTabsList>
        <CodeBlockTabsTrigger value="Mac/Linux">
          Mac/Linux
        </CodeBlockTabsTrigger>

        <CodeBlockTabsTrigger value="Windows">
          Windows
        </CodeBlockTabsTrigger>
      </CodeBlockTabsList>

      <CodeBlockTab value="Mac/Linux">
        ```bash
          export OPENAI_API_KEY="your_openai_api_key_here"
        ```
      </CodeBlockTab>

      <CodeBlockTab value="Windows">
        ```bash
          $Env:OPENAI_API_KEY="your_openai_api_key_here"
        ```
      </CodeBlockTab>
    </CodeBlockTabs>
  </Step>

  <Step title="Run Agent">
    ```bash
    python basic.py
    ```
  </Step>
</Steps>