# Collect Data From Yahoo Finance

> *Please pay **ATTENTION** that the data is collected from [Yahoo Finance](https://finance.yahoo.com/lookup) and the data might not be perfect. We recommend users to prepare their own data if they have high-quality dataset. For more information, users can refer to the [related document](https://qlib.readthedocs.io/en/latest/component/data.html#converting-csv-format-into-qlib-format)*


>  **Examples of abnormal data**

- [SH000661](https://finance.yahoo.com/quote/000661.SZ/history?period1=1558310400&period2=1590796800&interval=1d&filter=history&frequency=1d)
- [SZ300144](https://finance.yahoo.com/quote/300144.SZ/history?period1=1557446400&period2=1589932800&interval=1d&filter=history&frequency=1d)

We have considered **STOCK PRICE ADJUSTMENT**, but some price series seem still very abnormal.

## Requirements

```bash
pip install -r requirements.txt
```

## Collector Data

### Download data and Normalize data
```bash
python collector.py collector_data --source_dir ~/.qlib/stock_data/source --region CN --start 2020-11-01 --end 2020-11-10 --delay 0.1 --interval 1d --normalize_dir ~/.qlib/stock_data/normalize
```

### Download Data

```bash
python collector.py download_data --source_dir ~/.qlib/stock_data/source --region CN --start 2020-11-01 --end 2020-11-10 --delay 0.1 --interval 1d
```

### Normalize Data

```bash
python collector.py normalize_data --source_dir ~/.qlib/stock_data/source --normalize_dir ~/.qlib/stock_data/normalize --region CN
```

### Help
```bash
pythono collector.py collector_data --help
```

## Parameters

- interval: 1m or 1d
- region: CN or US