PAI Python SDK

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PAI Python SDK是阿里云机器学习平台 PAI(Platform for Artificial Intelligence) 提供的Python SDK，提供了更易用的HighLevel API，支持机器学习工程师简单地使用Python在PAI完成模型训练和部署，串联机器学习的流程。

🔧 安装

使用以下命令安装PAI Python SDK（支持Python版本 >= 3.8）：

python -m pip install pai

📖 文档

请通过访问 PAI Python SDK文档或是查看 docs 目录下的文件获取SDK的详细文档，包括用户指南和API文档。

🛠 使用示例

提交自定义训练任务

以下代码演示了如何通过SDK提交一个自定义的训练作业:

from pai.estimator import Estimator
from pai.image import retrieve

est = Estimator(
    # 获取PAI提供的最新PyTorch镜像
    image_uri=retrieve(
        framework_name="PyTorch", framework_version="latest"
    ).image_uri,
    command="echo hello",
    # 可选，指定source_dir上传你的训练代码：
    # source_dir="./train_src",
    instance_type="ecs.c6.large",
)
# 提交训练任务
est.fit()
print(est.model_data())

部署大语言模型

PAI提供了大量预训练模型，可以使用PAI Python SDK轻松部署：

from pai.model import RegisteredModel

# 获取PAI提供的QWen1.5-7b模型
qwen_model = RegisteredModel("qwen1.5-7b-chat", model_provider="pai")

# 部署模型
p = qwen_model.deploy(service_name="qwen_service")

# 调用服务
p.predict(
    data={
        "prompt": "What is the purpose of life?",
        "system_prompt": "You are helpful assistant.",
        "temperature": 0.8,
    }
)

# PAI提供的大语言模型支持OpenAI API，可以通过openai SDK调用
openai_client = p.openai()
res = openai_client.chat.completions.create(
    model="default",
    max_tokens=1024,
    messages=[
        {"role": "system", "content": "You are a helpful assistant."},
        {"role": "user", "content": "What is the purpose of life?"}
    ]
)
print(res.choices[0].message.content)

微调预训练模型

通过PAI提供的微调脚本，提交一个模型微调任务

from pai.model import ModelTrainingRecipe

training_recipe = ModelTrainingRecipe(
    model_name="qwen2-0.5b-instruct",
    model_provider="pai",
    instance_type="ecs.gn6e-c12g1.3xlarge",
)

training_recipe.train(
    inputs={
        # 本地或是阿里云OSS上的数据路径(oss://<bucketname>/path/to/data)
        "train": "<YourTrainingDataPath>"
    }
)

通过访问PAI提供的示例仓库，可以了解更多使用示例：pai-examples

🤝 贡献代码

我们欢迎为PAI Python SDK贡献代码。请阅读 CONTRIBUTING 文件了解如何为本项目贡献代码。

📝 许可证

PAI Python SDK是由阿里云开发，并根据Apache许可证（版本2.0）授权使用。

📬 联系方式

如需支持或咨询，请在GitHub仓库中提交issue，或通过钉钉群联系我们：

Metadata

Release files for alipai 0.4.13

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Source distribution (sdist)

Source distribution for alipai 0.4.13
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Built distribution (wheel)

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File	Interpreter	ABI	Platform	Reset
alipai-0.4.13-py3-none-any.whl 441.1 kB Jan 5, 2026	Python 3	none	any	Details

Total release size: 820.2 kB

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Size	441.1 kB
Tags	Python 3
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Upload date	Jan 5, 2026
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Uploaded via	`twine/6.1.0 CPython/3.8.18`