> For the complete documentation index, see [llms.txt](https://water-strategy.gitbook.io/waterstrategy/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://water-strategy.gitbook.io/waterstrategy/zhong-guo-ren/jian-mo-ji-chu-zhi-shi/parameters/others/deficit-parameter.md).

# 赤字参数

## 一般描述

参数跟踪节点的赤字（最大\ \_flow-实际流量）。 [API 参考资料](https://pywr.github.io/pywr-docs/master/api/generated/pywr.parameters.DeficitParameter.html)

注意：这个参数有点不寻常，因为它的值是在after方法中计算的，而不是calc\_价值观。它旨在与记录器（例如 NumpyArrayNodeRecorder）结合使用，以记录节点的赤字（定义为请求——实际流量）。请注意，这意味着记录此参数确实如此 *不* 给出求解器在此时间步中使用的值。或者，此参数可以由其他参数在模型中使用，其计算结果为 \_昨天\_赤字，其中第0个时间步的赤字为零。

## 属性

<table><thead><tr><th width="158">姓名</th><th width="473">描述</th><th>必填项</th></tr></thead><tbody><tr><td>模型</td><td>pywr.model.model</td><td>是的</td></tr><tr><td>节点</td><td>将追踪赤字的节点</td><td>是的</td></tr></tbody></table>

## 示例

即将推出...

\`\`json {

}

```
```


---

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