gemini api test

https://aistudio.google.com/api-keys

generate new 

by default it uses  GOOGLE_API_KEY  or GEMINI_API_KEY env var

rundll32 sysdm.cpl,EditEnvironmentVariables

or for manual keystore

 python -m pip install python-dotenv

GEMINI_API_KEY=key in .env file in pwd

pip install -q -U google-genai

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import os

from dotenv import load_dotenv

from google import genai

# Load environment variables

load_dotenv()

api_key = os.getenv("GEMINI_API_KEY")

if not api_key:

    raise ValueError("GEMINI_API_KEY not found! Did you set it in .env?")

# Initialize client

client = genai.Client(api_key=api_key)

print("Gemini interactive mode (Ctrl+C to exit)\n")

try:

    while True:

        prompt = input("You: ").strip()

        if not prompt:

            continue  # ignore empty input

        response = client.models.generate_content(

            model="gemini-3-flash-preview",

            contents=prompt

        )

        print("AI:", response.text, "\n")

except KeyboardInterrupt:

    print("\nExiting... Goodbye 👋")

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src

https://ai.google.dev/gemini-api/docs/quickstart