Generate Image with Gemini 3 model

generate_image_gemini_3.py

from google import genai

client = genai.Client(api_key=GEMINI_API_KEY)

def generate_image(prompt: str) -> None:
    response = client.models.generate_content(
        model="gemini-3-pro-image-preview",
        contents=prompt,
        config=genai.types.GenerateContentConfig(
            response_modalities=["IMAGE"],
            image_config=genai.types.ImageConfig(
                aspect_ratio="9:16"
            ),
        ),
    )

    for part in response.parts:
        if part.inline_data:
            part.as_image().show()