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crewai-python

README.md

Coordinating Teams of AI Agents with CrewAI in Python

Sample code for the Real Python tutorial CrewAI in Python: Coordinating Teams of AI Agents.

Requirements

  • Python 3.10 to 3.13 (CrewAI does not support 3.14+)
  • A free Google AI Studio API key for Gemini

Setup

Create and activate a virtual environment, then install the dependencies:

$ python -m venv venv
$ source venv/bin/activate     # On Windows: .\venv\Scripts\activate
$ python -m pip install -r requirements.txt

Set your Gemini API key as an environment variable:

$ export GEMINI_API_KEY="your-gemini-api-key-here"

On Windows PowerShell:

PS> $ENV:GEMINI_API_KEY = "your-gemini-api-key-here"

Running the Examples

Each script corresponds to one section of the tutorial:

File Tutorial Section
01_single_agent.py Get Started With CrewAI in Python
02_research_and_writer_crew.py Build Your First Multi-Agent Team
03_explicit_context.py Control Task Dependencies Explicitly
04_agent_with_tools.py Expand Agent Capabilities With Tools

Run any script with:

$ python 01_single_agent.py

Notes

  • The verbose=True flag prints detailed agent reasoning logs — useful for learning, but noisy for production.
  • If CrewAI complains about a missing OPENAI_API_KEY (e.g., when memory or certain tools are enabled), set it to any non-empty string to suppress the error.
  • On first run, CrewAI may show a "Would you like to view your execution traces?" prompt that auto-dismisses after twenty seconds.