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# Bug Report
When the start and end date are set with 2 data sources, the backtest doesn't run. I'm using this configuration:
```python
data = [
BacktestDataConfig(
catalo…
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Logging is an important tool in tracing the execution of the engine. It makes it possible to observe what is happening currently in the program, debugging logic issues and finally to observe if any co…
twitu updated
10 months ago
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您好，以下例子中，股池universe 生成是放在初始化方法中一次性生成的。这个能达到每天迭代时，当日股池动态变化的效果吗？在zipline中，股池是在pipeline中，然后再每日before_trading中触法重新计算，相当于每日重新生成股池。不知spectre的处理方案是否同样效果？
```
from spectre import factors, trading
from spec…
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When using the quantconnect/lean:15996 docker image, I receive,
```
Compiling '/LeanCLI/main.py'...
A fatal error occurred. The folder [/usr/share/dotnet/host/fxr] does not exist
```
when executi…
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http://allenfrostline.com/2017/03/12/strategy-xgboost-classification-technical-indicators/
Strategy: XGBoost Classification + Technical Indicators - Allen Frostline
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#### Expected Behavior
When SetTimeZone("UTC");
Order time and algorithm time are in sync.
When converting times to DateTimeOffset(time.ToUniversalTime()).ToUnixTimeSeconds())
The two times output…
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Epochs ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 0/1000 0% • 0:00:17 • -:--:…
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#### Expected Behavior
In QuantBook, it should be possible to use the Universe Selection feature.
#### Actual Behavior
Not supported.
#### Potential Solution
N/A
#### Reproducing…
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## Background
I'd like to propose a refactor of the data catalog, focusing on a couple of goals:
- Increasing performance
- Increasing usability
- Reducing maintenance burden
I'm opening this…
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# Bug Report
### Expected Behavior
Add a Market On Close order
### Actual Behavior
File "nautilus_trader/backtest/engine.pyx", line 868, in nautilus_trader.backtest.engine.BacktestEngine.ru…