### Installing pywencai Python Package

Source: https://github.com/fisher188/pywencai/blob/main/README.md

Command to install the pywencai library using pip. It's recommended to install the latest version due to frequent API changes.

```bash
pip install pywencai
```

--------------------------------

### Basic Querying with pywencai in Python

Source: https://github.com/fisher188/pywencai/blob/main/README.md

Demonstrates a basic query using `pywencai.get` to retrieve data on delisted stocks, sorted by delisting date.

```python
import pywencai

res = pywencai.get(query='退市股票', sort_key='退市@退市日期', sort_order='asc')
print(res)
```

--------------------------------

### Using Paid Features with pywencai in Python

Source: https://github.com/fisher188/pywencai/blob/main/README.md

Shows how to use the `pywencai.get` method with paid features by providing the `pro=True` flag and a valid `cookie` string.

```python
pywencai.get(question='近3个月每日市盈率', pro=True, cookie='xxxx')
```

--------------------------------

### Passing Additional Request Parameters in pywencai Python

Source: https://github.com/fisher188/pywencai/blob/main/README.md

Illustrates how to pass extra parameters, such as proxies, to the underlying requests library using the `request_params` argument in `pywencai.get`.

```python
pywencai.get(query='昨日涨幅', sort_order='asc', loop=True, log=True, request_params={ 'proxies': proxies })
```

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