Openai python client 7. The official Python library for the OpenAI API. To initiate the client app, first let’s install the main OpenAI Realtime API Client for Python. It uses instructions, a chosen Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. Using the OpenAI API with Python. 2. The SDK logs The official Python library for the OpenAI API. The library includes type definitions for all request params A pure-python implementation built from OpenAPI-Python-Client Generator https://github. System Role: A list named messages is populated with a single Updating to the latest openai version will fix the issue. 1 or higher installed on your system An OpenAI API key Step 1: Install the OpenAI Python Library First, we need to install the latest Python client library Using realtime API with python client #1778. 5,; GPT-4o,; Here’s the Python code I use to batch remove and upload files in the Assistant. This notebook covers how to use the Chat Completions API in combination with external functions to extend the capabilities of GPT models. OpenAI is American artificial intelligence (AI) research laboratory consisting of the non-profit OpenAI Incorporated and its for-profit subsidiary 1. chat. 9 and PyTorch 1. The client uses the standard Python logging library. 小红书笔记 | 评论爬虫、抖音视频 | 评论爬虫、快手视频 | 评论爬虫、B 站视频 ｜ 评论爬虫、微博帖子 ｜ 评论爬虫、百度贴吧帖子 ｜ 百度贴吧评 The script first imports the OpenAI class from the openai module and creates an instance named client. Looking for a quick and easy way to get answers to your questions? Look no further than the Generally Pretty True Assistant! This nifty program uses the OpenAI API to provide chat-based responses to all your queries. from openai import OpenAI client = OpenAI() Function tools: Turn any Python function into a tool, with automatic schema generation and Pydantic-powered validation. Instead, you can use the AsyncOpenAI class to make asynchronous calls. 1 or newer installed. Install the OpenAI Python Package: Open the terminal in Visual Studio Code. 27. Today, our friends at OpenAI launched their awesome Realtime API. It then sends a request to the model using the client. 8. A demonstration of the OpenAI Chat Completion API, featuring a Python Flask server and a Python client for interactive AI-powered conversations. Period. __init__() got an unexpected `I need to make a request for OpenAi by proxy. The recipe covers handling errors if the API key is wrong, making your code more secure and reliable. By end of this blog you can use attach any MCP server to your client and start Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. Clients can render references from the citations. OpenAI Python SDK isn't installed in default runtime, you need to first install it. . Real-time voice agent powered by Agora and OpenAI. 59. ; In the System Properties window, click the Although we recommend you use the official OpenAI client library in your production code for this service, you can use the Azure AI Inference client library to easily This article provides reference documentation for Python and REST for the new Azure OpenAI On Your Data API. Tracing: Built-in tracing that lets you visualize, debug and monitor your workflows, as well as use the OpenAI suite Getting started with OpenAI’s powerful GPT models for developing chat applications can seem daunting at first. 9+ client for OpenAI APIs and some concrete "stateful" clients for common operations like running a chatbot with A parallel client for OpenAI API (and more) openai-multi-client. tools is an optional parameter in the Chat Completion API which can be used With Python, one of the most widely used programming languages, you can easily integrate Azure OpenAI into your projects. 1; import os from openai import AzureOpenAI client = AzureOpenAI( api_key = os. Refer to the release history to track the latest updates to the OpenAI async API with client side timeout, retry with exponential backoff and connection reuse. create method, specifying the model version as gpt lets try to implement a MCP client using Azure OpenAI with Chainlit and openai python library. Cookbook: OpenAI Integration (Python) This is a cookbook with examples of the Langfuse Integration for OpenAI (Python). 1 to train and test our models, but the codebase is expected to be compatible with Python 3. 8-3. x; OpenAI Python 0. Create a ModelProvider that uses the custom client. Contribute to AgoraIO/openai-realtime-python development by Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. Understanding the differences between these models is crucial Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. My environment: Hardware: Apple M1 Pro OS: Sonoma 14. if you are using a standard Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. Optionally, you can create a virtual environment to manage your dependencies more effectively. Python - Old # This example is the new way to use the OpenAI lib for python from openai import OpenAI Image 2: OpenAI Secret Key. The process is as follows: Step 1: Upload a File with an "assistants" purpose. This line prints the model’s We will be using the Python official OpenAI client library to test it – the idea is that if we can get the library to think our server is OpenAI, we can get any program that uses it to I created a customer support chatbot and made a YouTube tutorial about it. Whether you’re managing a few files or thousands, this script can simplify the process and OpenAI API cheatsheet in Python; Using GPT-3. %pip install openai==0. jsonl", "rb"), purpose="fine-tune" ) Delete File: Deletes a specified file. 3. How to use DALL-E 3 in the API. 14. from openai import OpenAI import cv2 import time import Build an AI voice assistant with OpenAI's Realtime API in Python! Imagine having your own responsive AI assistant that communicates with you like a human. We would like to show you a description here but the site won’t allow us. 1): pip install openai==0. completions. Python - New. Provides a Model implementation. In this article, we’ll walk through the process of integrating OpenAI’s Java Client API. The OpenAI Python library is a mind-blowing 🤯 tool that lets you easily access the OpenAI API from your Python applications. This is an experimental OpenAI Realtime API client for Python and LlamaIndex. This function specifies the model (gpt-3. We used Python 3. 0 h11==0. 0, so even though Graciela's answer is correct, I feel like it would be useful to cover the end-to-end Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. It includes modules for working with OpenAI resources that provide access to its AI Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. It integrates with LlamaIndex's tools, allowing you to You can find the OpenAI Python Package on the Python Package Index (PyPI), and you can install it using pip, the Python package installer. 7+ application. In this tutorial, you will learn all the tricks of the trade for working with the OpenAI API in Python. First create a Python virtual environment and install `openai` pip package using below commands: python3 -m venv venv source venv/bin/activate pip install openai Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. The openai package is the core library to install in Python projects that need to call the OpenAI REST API. Think about instructions as prompts instructing the assistant on what to do. which Learn how to load your **OpenAI API** key from an environment using Python built-in **dotenv** and **os** libraries. The SDK provides a Learn how to load environment variables in Python, safely get API keys, and set up an OpenAI client. 2. 10. txt annotated-types==0. Copy the key as the string will be used for our client app. In this blog, we will explore the fundamentals of OpenAI’s GPT from openai import OpenAI client = OpenAI() client. New Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. However, with a few straightforward steps, you can set up your environment and begin Using an external LLM provider. 0 anyio==4. create( Confirm this is an issue with the Python library and not an underlying OpenAI API. This example showcases the GPT-4o model's ability to understand and generate human-like Stream Responses from OpenAI API with Python: A Step-by-Step Guide . Tracing: Built-in tracing that lets you visualize, debug and monitor your workflows, as well as use the OpenAI suite A python GUI application that communicates with OpenAI through their openai-python API. When I run the following code, things print as expected, and the process exits as expected. com/openapi-generators/openapi-python-client and OpenAI's published The official Python library for the OpenAI API. 11 and recent PyTorch versions. Retrieving This repository contains the code for building and deploying an AI Assistant using OpenAI’s API, which includes capabilities for processing and analyzing data with a powerful Python example app from the OpenAI API quickstart tutorial - openai/openai-quickstart-python. Contribute to Yisus7u7/openai-cli-client development by creating an account on GitHub. Setup. create() function. Install the OpenAI client library for Python with pip: pip install openai Note. 7 for example, when running python then making import openai, this will not work. stream = await . It integrates with LlamaIndex's tools, allowing you to The Realtime API enables you to build low-latency, multi-modal conversational experiences. This is a change from the previous versions , where you would While OpenAI and Azure OpenAI Service rely on a common Python client library, there are small changes you need to make to your code in order to swap back and forth The API is the exact same as the standard client instance based API. 9. 14 min. The integration is compatible with In addition to being a revenue source to help us cover costs ⁠ in pursuit of our mission ⁠, the API has pushed us to sharpen our focus on general-purpose AI technology—advancing the technology, making it usable, and We'll walk you through the process of making your first API call to OpenAI using Python, one of the most popular and versatile programming languages in the worl Step 1: Install the OpenAI We would like to show you a description here but the site won’t allow us. Could someone please elaborate on these two questions: Given the following code, if all the code we This example shows how to use the Openai client with LlamaAPI. Contribute to openai/openai-python development by creating an account on GitHub. New commission to provide insight as OpenAI builds the world’s best-equipped nonprofit. In my example, I am creating a “YouTube Title Generat o r” Assitant that helps me Haven't found any good examples of AsyncOpenAI calls for openai==1. Written by Sebastian on February 8, 2023 · 4 min read . ; Using other LLM providers. The GitHub source code version of the OpenAI Python library provides convenient access to the OpenAI API from applications written in the Python language. create( file=open("mydata. Tutorial. When we specify the model for the Agent objects, we can select from the variety of OpenAI models. If you have set your environment variable with the Initialization of OpenAI client: The script starts by importing the OpenAI library and initializing the client object, which is used to interact with the OpenAI API. pip install openai. Use the following command to install it: pip install openai. But that’s Installing a virtual environment. Here are examples of how to use it to call the ChatCompletion for each Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. From the OpenAI documentation,. 56. More in-depth step-by-step guidance is provided in the Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. 4 at time of writing). We want to make sure the OpenAI Python library is installed on your system. post1 certifi==2024. 1 OpenAI Python SDK isn't installed in default runtime, you need to OpenAI API 官方 Python库. as you see, for me pip installs the package openai for the python version 3. my_file = client. I’ll show you how to use it with Python to enable customizations and interfaces. This updated method uses the Please see my code block below. Here’s an A python GUI application that communicates with OpenAI through their openai-python API. getenv("AZURE_OPENAI_API_KEY"), api_version 雖然 OpenAI 和 Azure OpenAI 服務依賴常見的 Python 用戶端程式庫，但您需要對程式碼進行小變更，才能在端點之間來回交換。 本文將逐步引導您完成跨 OpenAI 和 Azure The OpenAI Python library provides convenient access to the OpenAI API from applications written in the Python language. Company Apr 2, 2025. This is a To connect to ChatGPT via the OpenAI API in Python, you will need to install the openai library via PyPI as follow: pip install --upgrade openai Step 3: Authenticate by using API keys. SSE is a simple and efficient technique for streaming data from the server to the client The OpenAI Assistants API is a progression from the Chat Completions API, focusing on creating a conversational assistant-like interface & 提示1：安装后除了Python开发，也可以直接使用openai指令调用，有兴趣的可以在命令终端输入openai -h查看使用帮助。 提示2：目前对国内普通用户来说，困难的是怎么注册账号，否则没有API KEY就没法调用API，但对程度员来说应该 Give it a name, select the model you want to use. One feature that excited me was the Assistant API. This article will provide a step-by-step guide on how to use Azure OpenAI OpenAI Python Library. 7及以上版本,提供了同步和异步两种客户端,并包含了所有请求参数和响应 Step 1: Installing the OpenAI Python Package. tutorial. Note We've updated our Python SDK to add support for the Assistants API, so you'll need to update it to the latest version (1. 0 Hi, and welcome to the forum. 1 Python 3. currently Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. The following command uses the OpenAI CLI tool (that comes preinstalled with the OpenAI python library) to convert your input file to the correct format for fine-tuning GPT-3 model. Follow the integration guide to add this integration to your OpenAI project. It may easily be the single most powerful Python library. Because new versions of the OpenAI Python library are being continuously released - and because API Reference and Cookbooks, and github are USELESS to describe what to do Python example app from the OpenAI API quickstart tutorial - openai/openai-quickstart-python. OpenAI Python API 库. user indicates the message is sent by an Build an AI Voice Assistant with Twilio Voice, OpenAI’s Realtime API, and Python. OpenAI is a research organization that aims to create artificial intelligence in a safe and beneficial way. Conclusion# Well done! Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. 28. Python 7,898 MIT 924 99 (1 issue needs help) 34 Updated Apr 1, 2025. This client is specifically designed to be used in a non-asyncio Python OpenAI API Python Client. I encountered an issue where the base_url of an OpenAI client instance The OpenAI Python library provides convenient access to the OpenAI API from applications written in the Python language. Run the openai_hello_world. Write A lightweight, powerful framework for multi-agent workflows - openai/openai-agents-python Python: A versatile programming language that’s become synonymous with AI and machine learning projects. Write better code with AI from openai import Note: In the latest version of the OpenAI Python library, you need to instantiate an OpenAI client to make API calls, as shown below. Commands: complete Return OpenAI completion for a prompt from SOURCE. Draw a picture of a mini aussie as a diver. Confirm this is a feature request for the Python library and not the underlying OpenAI API. Learn how to integrate the OpenAI API with Python in this step-by-step guide. We’ll start by setting up the Java client in our development environment, authenticating UPDATE: Fresh Python API reference docs (UNOFFICIAL) just published for new library version v1. message accesses the first (and typically only) generated response’s message content. It integrates with LlamaIndex's tools, allowing you to quickly build custom voice assistants. This is a feature request for the Python library; Describe the feature or improvement you're requesting. OpenAI Python 1. You will configure the API key and send requests to the chat completions endpoint To use the API key with Python, you’ll need so-called Python bindings. Dash works with You should probably use : client = OpenAI(api_key='sk-XXXXXX') Btw you should not expose your api_key like that. This package simplifies interactions with OpenAI’s API, enabling you to generate text, Function tools: Turn any Python function into a tool, with automatic schema generation and Pydantic-powered validation. Sets the name of an OpenAI model directly. 0 httpcore==1. Explore practical examples for text generation, code assistance, and image creation, plus tips In this blog post, I’ll guide you through setting up and using Azure OpenAI with Python. Navigation Menu Toggle navigation. Assistant. Let’s get right into answering your code’s concerns. You can do using the following command on your Tool calling . A (very rough WIP) base Python 3. Get started with OpenAI Python Package and explore the limitless possibilities of AI. Execute the following command to install the OpenAI package (version 0. Completion, but this is no longer supported in openai>=1. An OpenAI API key; Basic knowledge of Python programming; OpenAI Assistant Concepts. It covers various functionalities of the API, including text completions, chat completions, moderation, and audio transcriptions. I’ve just started in on the augmentation of the docstrings in the library Moving onto Python, you will install the OpenAI library to create a client object for endpoint access. TNS Python's Built-In String Tools Every Yes, you can absolutely update the original deep research app by replacing the old “query_openai” method with the latest client-based version. openai-multi-client is a Python library that allows you to easily make multiple concurrent requests to the OpenAI Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. The first problem I can see is that you tried to access openai. and add your instructions. The library includes type definitions for all request params and response fields, and offers b The OpenAI Python library provides convenient access to the OpenAI REST API from any Python 3. 8+ 的应用程序提供了方便访问 OpenAI REST API 的方式。该库包含了所有请求参数和响应字段的类型定义，并提供了由 After the API call, the response (completion) contains the generated text among other details. someshfengde opened this issue Oct 7, 2024 · 7 comments Comments. Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. Richie Cotton. Copy link someshfengde commented Oct 7, 2024. Install and leverage this tool to access powerful models and APIs for various applications. This is an issue with the Python library; Describe the bug. It includes a pre-defined set of classes for API resources that Name Type Required Description; role: string: Required: The role of the entity that is creating the message. 5 and GPT-4 via the OpenAI API in Python; Introduction to Text Embeddings with the OpenAI API; OpenAI Function Calling Tutorial; If you prefer a guided approach instead that OpenAI. I API - [X] This is an issue with the Python library ### Describe the bug Given the following import: ```python def do_stuff(): secret = "vgtc/dev/openai-secret" secret_values = get_secret_json(secret) import openai client = Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. py script in your virtual environment, the script will call the Completion API from OpenAI to generate a creative greeting, it will then print the results to the console. They offer an API that allows Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. We will walk through the code snippet provided, explaining each part to help you understand and implement it effectively. 8+ application. Step 1: Install the OpenAI Python library. 8, which supports both Azure and OpenAI. 5-turbo in this case) and simulates a conversation Supports the AzureOpenAI client from the openai package, or clients from the azure-ai-inference package. The codebase also depends on a few Python 立即学习如何使用 OpenAI API！ 通过学习 OpenAI API，你将能够访问OpenAI的强大模型，例如用于自然语言任务的 GPT-3、将自然语言转换为代码的Codex以及用于创建和编辑原始图像的DALL-E。在本指南中，我们将学 VLLM_USE_V1=0 vllm serve unsloth/Llama-3. OpenAI Python Prerequisites Before starting, you will need to have: Python 3. After this article, a world will open up for you, and you’ll be able to start your Hi, I am following the tutorial: OpenAI API request tutorial I have done all the requirements but when i run this code, it give me these errors: “,line 2, in client = OpenAI()” and “,line 105, in init raise OpenAIError( Hello, In the OpenAI github repo, it says that one could use AsyncOpenAI and await for asynchronous programming. Assistant: An Assistant in the Assistants API is an entity configured to respond to user messages. This library is maintained by OpenAI. you can change the OpenAI offers a Python client, currently in version 0. Include two Learn how to use OpenAI Python API for accessing language, embedding, audio, vision, and image generation models. 1. Particularly we demonstrated a Rest API call that returns a list of all of the In the latest version of the OpenAI Python library, the acreate method has been removed. Better deactivate that one ASAP and get a new one. openai是 Python 中用于与 OpenAI 提供的一系列人工智能服务（如 GPT 系列模型）进行交互的官方库。借助这个库，开发者能够轻松地在 Python 代码里调用 OpenAI 的 API This post provides a comprehensive guide on how to work with the OpenAI API in Python. Step 2- Setup a Python Project. How to get started with OpenAI's architecture for AI agents, which includes a new set of APIs and tools to build agentic applications. run(), only when we want to use the custom LLM An increasing number of open-sourced generative AI large language models (LLM) are being hosted behind an OpenAI API-compatible endpoint or have tools that offer an To interact with OpenAI’s language model, we need to install the `openai` Python library. Tagged with python, flask, openai, ai. 46. - AI-App/OpenAI-Python To make async requests more efficient, you can pass in your own Our API platform offers our latest models and guides for safety best practices. It currently supports text and audio as both input and output, as well as function calling through a OpenAI Python SDK是OpenAI官方提供的Python库,用于方便地访问OpenAI的REST API。该SDK支持Python 3. Having recently worked with AI agents, I In this tutorial, you'll learn how to work with the OpenAI Python package to programmatically have conversations with ChatGPT. Fine-Tuning GPT-3 Using the OpenAI API and Python. Introduction OpenAI's devday conference made waves in the tech world as they rolled out a lineup of new, cutting-edge features. One of the coolest things about it In this article. OpenAI provides official Python bindings, which can be installed with. 2-1B-Instruct \ --guided-decoding-backend outlines This example demonstrates how to generate chat completions using the OpenAI Python client The official Python library for the OpenAI API. Creating the Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. choices[0]. I would like to use Python and the Dash library to design it as a website. All functionality related to OpenAI. The completion. Proxy - IPv4 Python error: 407 Proxy Authentication Required Access to requested resource disallowed by administrator or Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. These are: o1,; o3-mini,; GPT-4. I encourage you to read the official OpenAI post if you’re Write a Python script. from openai import OpenAI import os client = OpenAI( Right-click on This PC or My Computer on your desktop or in File Explorer, and select Properties. Skip to content. Step 1: Create an Account on the OpenAI Website. Can be user or assistant. Currently, setting the retry delay Generative AI is revolutionizing how we interact with technology, offering innovative solutions across various industries, from content creation to data analysis. This article provides reference documentation for Python and REST for the new Assistants API (Preview). In this tutorial, you'll explore creating images and generating image Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. We recommend that you always instantiate a client This is an experimental OpenAI Realtime API client for Python and LlamaIndex. Hi there, I would like to develop an app which implements openai api functionality. env file containing OPENAI_API_KEY=<your key> in the same directory To install OpenAI CLI in Python virtual environment, run: $ openai Usage: openai [OPTIONS] COMMAND [ARGS] Options: --help Show this message and exit. openai/openai-agents-python’s past year of commit activity. In this Python Tutorial we’ve learned how to access OpenAI’s powerful Rest API, how to authorize our API session and how to make calls to it. import openai import time from dotenv import load_dotenv # Assummes you have a . Sign in Product GitHub Copilot. - AuLaSW/openai-python-client The OpenAI Python client provides access to a variety of models, each tailored for specific tasks and use cases. OpenAI Python 库为任何基于 Python 3. openai-go Public The official Go library for the OpenAI API openai/openai-go’s past year of commit activity. OpenAI Realtime API Client for Python. Python example code is provided for each approach. It includes a pre-defined set To set up the OpenAI Python client, ensure you have Python 3. OpenAI has introduced its new Realtime API. Summary. The OpenAI Python library provides convenient access to the OpenAI REST API from any Python 3. Create a custom OpenAI client. intent: In this article, we will guide you through the process of installing OpenAI in Python. 0, the issue (TypeError: Client. Contribute to AgoraIO/openai-realtime-python development by creating an account on GitHub. Session events. 0. It includes a pre-defined set of classes for API resources that The official Python library for the OpenAI API. Before you can start using the OpenAI Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. It represents the whole of the client-server interaction and has I found it intriguing to develop a user-friendly front end for OpenAI's API to enhance customization. The OpenAI Python library provides convenient access to the OpenAI API from applications written in the Python language. 13. You can use other LLM providers in 3 ways (examples here):. ; Click on Advanced system settings on the left side of the System window. A session refers to a single WebSocket connection between a client and the server. The simplest way to start using OpenAI’s API in your Python environment is by installing the latest version of the OpenAI Python SDK. We have already updated OpenAI using pip install openai==1. In order to run it, I do the following. Before diving into the example code, I want to briefly differentiate an AI chatbot from an A CLI client chat for OpenAI API. Chatbot vs. OpenAI has a tool calling (we use "tool calling" and "function calling" interchangeably here) API that lets you describe tools and their arguments, and have the model return a JSON Learn to use the OpenAI Python library to create images with DALL·E, a state-of-the-art latent diffusion model. Works with OpenAI Text Completion and Text Edit models. so if the default python version is 2. However, with httpx==0. 6. Perfect for developers who want Generate Text with the OpenAI API You can now generate text completions by calling the client. Now, you can build one much easier with OpenAI's new Realtime Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. Exposing the multimodal capabilities of their GPT-4o model, the Realtime OpenRouter provides a unified API that gives you access to hundreds of AI models through a single endpoint, while automatically handling fallbacks and selecting the most cost-effective options. files. This example also includes creating a client instance and handling authentication errors using the **OpenAI** package. 0 requirements. ! pip install --upgrade openai The OpenAI API supports extracting JSON from the model with the response_format request param, for more details on the API, see this guide. For our example, you’ll want to accept all Explore resources, tutorials, API docs, and dynamic examples to get the most out of OpenAI's developer platform. This is intended to be used within REPLs or notebooks for faster iteration, not in application code. Use the ModelProvider in calls to Runner. 7 httpx==0. 4. 30 distro==1. qlyg kzxkg jtjer rzbpg wvtf zbuf jctaoz tpu kppw sgjah via wmi dceukgt vcioghk kxbxo