Blog Generator with OpenAI and Python

A project from Codedex.

A command-line blog generator that uses GPT-3 to write paragraphs on any topic you give it. Enter a topic, get a paragraph — repeat as many times as you want.

Setup

1. Install dependencies

pip install openai python-dotenv

2. Add your API key

Create a .env file in the project root:

API_KEY=your_api_key_here

Get your key from openai.com. Keep it secret — don't commit .env to GitHub (add it to .gitignore).

3. Run it

python blog_generator.py

How It Works

The core function sends a topic to OpenAI's gpt-3.5-turbo-instruct model and returns a generated paragraph:

def generate_blog(paragraph_topic):
    response = openai.completions.create(
        model='gpt-3.5-turbo-instruct',
        prompt='Write a paragraph about the following topic. ' + paragraph_topic,
        max_tokens=400,
        temperature=0.3
    )
    return response.choices[0].text.strip()

A while loop then lets you keep generating paragraphs until you're done.

Parameters

Parameter	What it does
model	The GPT model to use
prompt	The instruction + your topic
max_tokens	Max response length (~400 tokens ≈ 1 paragraph)
temperature	Randomness: 0 = consistent, 1 = creative