从两把 Key
到第一张图

# 保存为 first_image.py，然后运行 python3 first_image.py
# 仅在自己的电脑运行；不要把 Key 放进公开网页、截图或代码仓库。
import base64, getpass, json, urllib.request, urllib.error

key = getpass.getpass("粘贴 GPT Key（输入不显示）：").strip()
payload = {
    "model": "gpt-image-2-standard",
    "prompt": "一只蓝色陶瓷咖啡杯，白色桌面，柔和自然光，干净的产品摄影",
    "n": 1
}
request = urllib.request.Request(
    "https://miaoma.ai/v1/images/generations",
    data=json.dumps(payload).encode("utf-8"),
    headers={"Authorization": "Bearer " + key,
             "Content-Type": "application/json"}
)
try:
    with urllib.request.urlopen(request, timeout=300) as response:
        result = json.load(response)
    encoded = result["data"][0].get("b64_json")
    if not encoded:
        raise ValueError("没有收到图片；先查询额度，再联系客服。")
    image = base64.b64decode(encoded)
    suffix = ".png" if image.startswith(b"\x89PNG") else (
        ".jpg" if image.startswith(b"\xff\xd8") else ".webp")
    filename = "first-image" + suffix
    with open(filename, "wb") as output:
        output.write(image)
    print("图片已保存：", filename)
except urllib.error.HTTPError as error:
    print("请求失败：", error.code, error.read().decode("utf-8", "replace"))
except Exception as error:
    print("请求未完成：", error)
    print("请先查询额度，确认结果后再重试。")

# 使用 Nano Key，并将上面的 payload 替换为：
payload = {
    "model": "nano-banana-2-2k",
    "prompt": "一座海边白色建筑，建筑摄影，清晨自然光",
    "n": 1,
    "extra_fields": {"aspect_ratio": "16:9"}
}
# 1K: nano-banana-2-1k，每张 1 额度
# 2K: nano-banana-2-2k，每张 1 额度
# 4K: nano-banana-2-4k，每张 2 额度

# macOS / Linux 终端；读取 Key 时不回显
printf '粘贴 Nano Key: '
read -r -s IMAGE_KEY
printf '\n'
# reference.png 替换为你电脑上的图片路径
curl --max-time 300 https://miaoma.ai/v1/images/edits \
  -H "Authorization: Bearer $IMAGE_KEY" \
  -F 'model=nano-banana-2-2k' \
  -F 'prompt=保留主体，将背景改为浅蓝色摄影棚' \
  -F 'n=1' \
  -F 'extra_fields={"aspect_ratio":"1:1"}' \
  -F 'image=@reference.png' \
  -o edit-result.json
unset IMAGE_KEY
# 解码返回的图片（在同一个目录执行）
python3 - <<'PYIMAGE'
import json, base64
from pathlib import Path
result = json.loads(Path("edit-result.json").read_text())
if not result.get("data") or not result["data"][0].get("b64_json"):
    raise SystemExit("未收到图片，请查看 edit-result.json 并先查询额度。")
image = base64.b64decode(result["data"][0]["b64_json"])
suffix = ".png" if image.startswith(b"\x89PNG") else (
    ".jpg" if image.startswith(b"\xff\xd8") else ".webp")
Path("edited-image" + suffix).write_bytes(image)
print("已保存 edited-image" + suffix)
PYIMAGE