python-3.x - 尝试从 piccolo_admin.endpoints import create_admin 导入模型时出现 piccolo_admin 空字节错误

Question

我想在 Starlette 中使用 piccolo_admin 创建一个管理页面，但出现空字节错误，请帮助我：

Traceback (most recent call last):
  File "admin.py", line 4, in <module>
    from piccolo_admin.endpoints import create_admin
ValueError: source code string cannot contain null bytes

我的代码：

from starlette.applications import Starlette
from starlette.routing import Mount
import uvicorn
from piccolo_admin.endpoints import create_admin
from db_booker.tables import *

admin = create_admin(tables=[Admins, Users, Books, Titles],
                site_name = "Avicenna Admin")

app = Starlette(routes=[Mount("/admin/", admin)])


if __name__ == '__main__':
    uvicorn.run(app)