OpenAI Python Library

The OpenAI Python library provides convenient access to the OpenAI API from applications written in the Python language. It includes a pre-defined set of classes for API resources that initialize themselves dynamically from API responses which makes it compatible with a wide range of versions of the OpenAI API.

Documentation

See the OpenAI API docs.

Installation

You don't need this source code unless you want to modify the package. If you just want to use the package, just run:

pip install --upgrade openai

Install from source with:

python setup.py install

Usage

The library needs to be configured with your account's secret key which is available on the website. Either set it as the OPENAI_API_KEY environment variable before using the library:

export OPENAI_API_KEY='sk-...'

Or set openai.api_key to its value:

import openai
openai.api_key = "sk-..."

# list engines
engines = openai.Engine.list()

# print the first engine's id
print(engines.data[0].id)

# create a completion
completion = openai.Completion.create(engine="ada", prompt="Hello world")

# print the completion
print(completion.choices[0].text)

Command-line interface

This library additionally provides an openai command-line utility which makes it easy to interact with the API from your terminal. Run openai api -h for usage.

# list engines
openai api engines.list

# create a completion
openai api completions.create -e ada -p "Hello world"

Example code

Examples of how to use embeddings, fine tuning, semantic search, and codex can be found in the examples folder.

Embeddings

In the OpenAI Python library, an embedding represents a text string as a fixed-length vector of floating point numbers. Embeddings are designed to measure the similarity or relevance between text strings.

To get an embedding for a text string, you can use the embeddings method as follows in Python:

import openai
openai.api_key = "sk-..."  # supply your API key however you choose

# choose text to embed
text_string = "sample text"

# choose an embedding
model_id = "davinci-similarity"

# compute the embedding of the text
embedding = openai.Engine(id=model_id).embeddings(input=text_string)['data'][0]['embedding']

An example of how to call the embeddings method is shown in the get embeddings notebook.

Examples of how to use embeddings are shared in the following Jupyter notebooks:

For more information on embeddings and the types of embeddings OpenAI offers, read the embeddings guide in the OpenAI documentation.

Fine tuning

Fine tuning a model on training data can both improve the results (by giving the model more examples to learn from) and reduce the cost & latency of API calls (by reducing the need to include training examples in prompts).

Examples of fine tuning are shared in the following Jupyter notebooks:

Classification with fine tuning (a simple notebook that shows the steps required for fine tuning)
Fine tuning a model that answers questions about the 2020 Olympics

For more information on fine tuning, read the fine-tuning guide in the OpenAI documentation.

Requirements

Python 3.7.1+

In general we want to support the versions of Python that our customers are using, so if you run into issues with any version issues, please let us know at support@openai.com.

Credit

This library is forked from the Stripe Python Library.

License

upskillr-ai/openai-python

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