# 問題4　(v)
###### tags: `Flask`
## Circular Import
修改 flask-blueprint 時遇到 Circular Import 的問題

AttributeError: partially initialized module 'app_blog.author'
                has no attribute 'route'
                (most likely due to a circular import)

File "C:\Users\d0509\Documents\GitHub\FlaskBlog\manage.py", line 1, in <module>
    from app_blog import app
File "C:\Users\d0509\Documents\GitHub\FlaskBlog\app_blog\__init__.py", line 27, in <module>
    from .author import author
File "C:\Users\d0509\Documents\GitHub\FlaskBlog\app_blog\author\__init__.py", line 5, in <module>
    from . import view
File "C:\Users\d0509\Documents\GitHub\FlaskBlog\app_blog\author\view.py", line 10, in <module>
    @author.route('/')

:::warning
已解決
---
在 `view.py` 中要將 `@app.route` 改成 `@author.route` 時需要 `import author`，
但不是從 `app_blog` 中引入，而是從 `app_blog.author`，原本定義的地方引入
:::