### Install bilibili-api

Source: https://nemo2011.github.io/bilibili-api

Commands to install the stable or development versions of the library.

```bash
# 主版本
$ pip3 install bilibili-api-python

# 开发版本
$ pip3 install bilibili-api-dev

# 最新修改会在 dev 分支
$ pip3 install git+https://github.com/Nemo2011/bilibili-api.git@dev
```

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

### Install Async Request Libraries

Source: https://nemo2011.github.io/bilibili-api

Required dependencies for handling asynchronous network requests.

```bash
# aiohttp
$ pip3 install aiohttp

# httpx
$ pip3 install httpx

# curl_cffi
$ pip3 install "curl_cffi"
```

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

### Fetch Video Information

Source: https://nemo2011.github.io/bilibili-api

Example of initializing the Video class and retrieving metadata for a specific Bilibili video.

```python
import asyncio
from bilibili_api import video


async def main() -> None:
    # 实例化 Video 类
    v = video.Video(bvid="BV1uv411q7Mv")
    # 获取信息
    info = await v.get_info()
    # 打印信息
    print(info)


if __name__ == "__main__":
    asyncio.run(main())
```

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

### Like a Video with Credentials

Source: https://nemo2011.github.io/bilibili-api

Demonstrates how to authenticate using the Credential class to perform actions like liking a video.

```python
import asyncio
from bilibili_api import video, Credential

async def main() -> None:
    # 实例化 Credential 类
    credential = Credential(sessdata=SESSDATA, bili_jct=BILI_JCT, buvid3=BUVID3)
    # 实例化 Video 类
    v = video.Video(bvid="BVxxxxxxxx", credential=credential)
    info = await v.get_info()
    print(info)
    # 给视频点赞
    await v.like(True)

if __name__ == '__main__':
    asyncio.run(main())
```

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

### 切换请求库

Source: https://nemo2011.github.io/bilibili-api

使用 select_client 函数在不同请求库之间进行切换，注意 httpx 不支持 WebSocket。

```python
from bilibili_api import select_client

select_client("curl_cffi") # 选择 curl_cffi，支持伪装浏览器的 TLS / JA3 / Fingerprint
select_client("aiohttp") # 选择 aiohttp
select_client("httpx") # 选择 httpx，不支持 WebSocket
```

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

### API 调用传参规范

Source: https://nemo2011.github.io/bilibili-api

推荐使用指名参数调用 API，以避免因参数顺序变动导致的错误。

```python
# 推荐
video.get_info(bvid="BV1uv411q7Mv")

# 当然也可以这样
kwargs = {
    "bvid": "BV1uv411q7Mv"
}
video.get_info(**kwargs)

# 不推荐
video.get_info("BV1uv411q7Mv")
```

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

### 配置 curl_cffi 伪装

Source: https://nemo2011.github.io/bilibili-api

通过 request_settings 设置 impersonate 参数以伪装浏览器指纹。

```python
from bilibili_api import request_settings

request_settings.set("impersonate", "chrome131") # 第二参数数值参考 curl_cffi 文档
# https://curl-cffi.readthedocs.io/en/latest/impersonate.html
```

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

### 设置请求代理

Source: https://nemo2011.github.io/bilibili-api

当请求频率过快导致 412 错误时，可以通过设置代理来绕过限制。

```python
from bilibili_api import request_settings

request_settings.set_proxy("http://your-proxy.com") # 里头填写你的代理地址

request_settings.set_proxy("http://username:password@your-proxy.com") # 如果需要用户名、密码
```

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