Nano Banana 2 API

import requests
import base64

# Configuration
API_KEY = "sk-YOUR_API_KEY"  # Replace with your API Key
API_URL = "https://api2.laozhang.ai/v1beta/models/gemini-3.1-flash-image:generateContent"

# Request headers
headers = {
    "Authorization": f"Bearer {API_KEY}",
    "Content-Type": "application/json"
}

# Build request payload
payload = {
    "contents": [{
        "parts": [{"text": "浅色石材桌面上的哑光陶瓷咖啡杯商品图，柔和窗光，自然阴影，极简陈列，保留真实材质细节。"}]
    }],
    "generationConfig": {
        "responseModalities": ["IMAGE"],
        "imageConfig": {
            "imageSize": "2K"
        }
    }
}

# Send request
print("Generating image...")
response = requests.post(API_URL, headers=headers, json=payload, timeout=180)

if response.status_code != 200:
    print(f"Error: {response.status_code} - {response.text}")
    exit(1)

# Extract and save image
result = response.json()

image_part = None
for candidate in result.get("candidates", []):
    for part in candidate.get("content", {}).get("parts", []):
        inline_data = part.get("inlineData") or part.get("inline_data")
        if inline_data and inline_data.get("data"):
            image_part = inline_data
            break
    if image_part:
        break

if not image_part:
    print("No image data in response")
    print(result)
    exit(1)

mime_type = image_part.get("mimeType") or image_part.get("mime_type") or "image/png"
extension = "jpg" if mime_type == "image/jpeg" else "webp" if mime_type == "image/webp" else "png"
output_path = f"output.{extension}"

with open(output_path, "wb") as f:
    image_data = image_part["data"]
    f.write(base64.b64decode(image_data))

print(f"✅ Image saved: {output_path}")