---
id: "P:cAlgo.API.GetFitnessArgs.History"
kind: "property"
type: "T:cAlgo.API.GetFitnessArgs"
url: "https://help.ctrader.com/ctrader-algo/references/Optimization/GetFitnessArgs/History/"
---

> Documentation index for agents: https://help.ctrader.com/ctrader-algo/llms.txt · machine index: https://help.ctrader.com/ctrader-algo/api.json

# GetFitnessArgs.History

Member of [GetFitnessArgs](https://help.ctrader.com/ctrader-algo/references/Optimization/GetFitnessArgs/index.md).

## History

Gets all the historical trades.

Environments: Desktop supported · CLI supported · Cloud supported.

C#:

```csharp
History History {get;}
```

Python:

```python
getFitnessArgs.History: History
```

### Returns

`History` — 

### Examples

C#:

```csharp
protected override double GetFitness(GetFitnessArgs args)
{
    return args.History.Where(trade => trade.NetProfit > 0).Sum(trade => trade.NetProfit);
}
```

Python:

```python
def get_fitness(self, args):
    return sum(trade.NetProfit for trade in args.History if trade.NetProfit > 0)
```