Introduction
In this tutorial, you'll learn how to create a simple AI agent using Python and the open-source libraries that Nvidia is promoting for its new AI agent platform. This hands-on guide will walk you through building a basic AI agent that can interact with users and perform simple tasks, similar to what Nvidia's new platform aims to enable. You'll gain practical experience working with AI agent frameworks that are becoming increasingly popular in the industry.
Prerequisites
Before starting this tutorial, you'll need:
- A computer with Python 3.7 or higher installed
- Basic understanding of Python programming concepts
- Internet connection for downloading packages
- Text editor or IDE (like VS Code or PyCharm)
No prior AI experience is required - we'll explain everything you need to know as we go.
Step-by-Step Instructions
1. Set Up Your Python Environment
First, create a new directory for this project and navigate to it in your terminal:
mkdir ai-agent-project
cd ai-agent-project
Next, create a virtual environment to keep your project dependencies isolated:
python -m venv agent_env
source agent_env/bin/activate # On Windows: agent_env\Scripts\activate
This creates a clean environment for our AI agent project, preventing conflicts with other Python packages.
2. Install Required Packages
Now install the necessary Python packages for building our AI agent:
pip install openai python-dotenv
We're installing two key packages:
- openai: This library allows us to interact with OpenAI's API, which powers many AI agents
- python-dotenv: This helps us manage our API keys securely
Why install these? The OpenAI library gives us access to powerful language models that can understand and respond to user inputs, which is essential for an AI agent.
3. Create Your API Key Configuration
Create a file named .env in your project directory:
touch .env
Open the file and add your OpenAI API key:
OPENAI_API_KEY=your_actual_api_key_here
Important: Never commit your API key to version control. The .env file is in the .gitignore by default in most projects.
4. Create Your Basic AI Agent
Create a file named ai_agent.py and add the following code:
import openai
import os
from dotenv import load_dotenv
# Load environment variables
load_dotenv()
# Initialize the OpenAI client
client = openai.OpenAI(api_key=os.getenv('OPENAI_API_KEY'))
class SimpleAgent:
def __init__(self):
self.conversation_history = []
def get_response(self, user_input):
# Add user input to conversation history
self.conversation_history.append({'role': 'user', 'content': user_input})
# Create the completion request
response = client.chat.completions.create(
model='gpt-3.5-turbo',
messages=self.conversation_history,
max_tokens=150,
temperature=0.7
)
# Extract the assistant's response
assistant_response = response.choices[0].message.content
# Add assistant response to conversation history
self.conversation_history.append({'role': 'assistant', 'content': assistant_response})
return assistant_response
# Main interaction loop
if __name__ == '__main__':
agent = SimpleAgent()
print('AI Agent: Hello! I\'m your AI assistant. Type "quit" to exit.')
while True:
user_input = input('You: ')
if user_input.lower() in ['quit', 'exit', 'bye']:
print('AI Agent: Goodbye!')
break
response = agent.get_response(user_input)
print(f'AI Agent: {response}')
This code creates a simple AI agent that can have conversations with users. The agent remembers the conversation history, which makes interactions more natural.
5. Run Your AI Agent
Execute your agent by running:
python ai_agent.py
You should see a prompt asking for your input. Try asking questions like:
- 'What is artificial intelligence?'
- 'Tell me a joke'
- 'How do I learn Python?'
Notice how the agent remembers previous conversations and responds appropriately. This demonstrates the core concept of AI agents that maintain context during interactions.
6. Enhance Your Agent with Simple Functionality
Let's make our agent a bit more useful by adding a simple calculator function:
import openai
import os
import re
from dotenv import load_dotenv
load_dotenv()
client = openai.OpenAI(api_key=os.getenv('OPENAI_API_KEY'))
class EnhancedAgent:
def __init__(self):
self.conversation_history = []
def calculate(self, expression):
try:
# Simple mathematical evaluation
result = eval(expression)
return f'The result is {result}'
except:
return 'Sorry, I couldn\'t calculate that.'
def get_response(self, user_input):
# Check if user wants to do a calculation
calc_match = re.search(r'calculate\s+(.+)', user_input, re.IGNORECASE)
if calc_match:
expression = calc_match.group(1)
return self.calculate(expression)
# Add user input to conversation history
self.conversation_history.append({'role': 'user', 'content': user_input})
# Create the completion request
response = client.chat.completions.create(
model='gpt-3.5-turbo',
messages=self.conversation_history,
max_tokens=150,
temperature=0.7
)
# Extract the assistant's response
assistant_response = response.choices[0].message.content
# Add assistant response to conversation history
self.conversation_history.append({'role': 'assistant', 'content': assistant_response})
return assistant_response
# Main interaction loop
if __name__ == '__main__':
agent = EnhancedAgent()
print('AI Agent: Hello! I\'m your enhanced AI assistant. Type "quit" to exit.')
while True:
user_input = input('You: ')
if user_input.lower() in ['quit', 'exit', 'bye']:
print('AI Agent: Goodbye!')
break
response = agent.get_response(user_input)
print(f'AI Agent: {response}')
This enhanced version can now perform basic calculations when you ask it to 'calculate 2 + 2'.
Summary
In this tutorial, you've built a basic AI agent using Python that can:
- Have natural conversations with users
- Remember conversation history
- Perform simple calculations
This simple implementation demonstrates the core concepts behind the AI agent platforms that companies like Nvidia are developing. While the example is basic, it shows how AI agents can understand user input, maintain context, and provide helpful responses - all fundamental capabilities that Nvidia's new platform aims to support.
As you continue exploring AI agents, you can expand this foundation by adding more sophisticated functions, integrating with external APIs, or connecting to more advanced AI models. The principles you've learned here form the basis for creating more complex AI agents in real-world applications.



