> For the complete documentation index, see [llms.txt](https://docs.geopard.tech/geopard-tutorials/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.geopard.tech/geopard-tutorials/jpn/apidokyumento/geopard-apirikuesuto/74-mytshon-wo.md).

# 74. ミューテーション: 式を検証

方程式コードを検証するミューテーション。Equationエンジンは次の上に構築されています `python` 言語で、一般的な数学演算のサポートがあります。 

サポートされている操作の一覧：

1. Python基本モジュール：abs、all、any、bin、bool、bytearray、bytes、chr、complex、dict、dir、divmod、enumerate、filter、float、format、frozenset、hash、hex、id、int、isinstance、len、list、map、max、min、oct、ord、pow、range、repr、reversed、round、set、slice、sorted、str、sum、tuple、type、zip。
2. Pythonのmathモジュール：acos、acosh、asin、asinh、atan、atan2、atanh、ceil、copysign、cos、cosh、degrees、e、exp、fabs、factorial、floor、fmod、frexp、fsum、hypot、isinf、isnan、ldexp、log、log10、log1p、modf、pi、pow、radians、sin、sinh、sqrt、tan、tanh、trunc。
3. Python条件文：if、elif、else。
4. Pythonループ：for、while。

{% hint style="danger" %}
`equationAsText` は"""\<equation>"""で囲まれ、コードはPython風のスタイルでなければなりません。&#x20;

必要なタブと空白のみを保持してください。
{% endhint %}

{% code overflow="wrap" lineNumbers="true" %}

```graphql
mutation VerifyEquation {
  verifyEquation(input: {
    dataVariables: [{
      variable: "yield_vol"
      sampleValue: 1.1 
    }, {
      variable: "prod"
      sampleValue: 2.2
    }]
    equationAsText: """calculated = yield_vol/prod + 3.5 
if calculated >= 30:
    result = 35
elif calculated >= 20 and calculated < 30:
    result = 25
else:
    result = 15
    """
    equationResultVariable: "result"
  }) {
    executed
    result
    errorMessage
  }
}
```

{% endcode %}


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