from modelscope.hub.snapshot_download import snapshot_download

# 任选其一：
# reasoning/thinking 模型：
#model_id = "Qwen/Qwen3-4B-Thinking-2507"
# 或者普通 instruct 但带很强推理能力的：
model_id = "Qwen/Qwen3-4B-Instruct-2507"

local_dir = "models/qwen3-4b-instruct-2507"

model_dir = snapshot_download(
    model_id,
    cache_dir=local_dir,   # 下载到本地哪个目录
    revision=None          # 用默认最新版本；需要特定 revision 就填字符串
)

print("Downloaded to:", model_dir)