flask 加载模块问题

项目结构
├── app
│   ├── forms
│   │   ├── __init__.py
│   │   ├── login.py

│   ├── __init__.py

│   └── views
│   ├── admin.py
│   ├── blog.py
│   ├── book.py
│   ├── __init__.py

├── config
│   ├── default.py
│   ├── development.py
│   ├── __init__.py

## run.py 内容
```
from app import create_app

app = create_app()
if __name__ == '__main__':
app.run()
```
## app/__int__.py
```
def create_app():
app = Flask(__name__)
config = load_config()
app.config.from_object(config)

register_routes(app)
return app

def register_routes(app):
from .views import admin, blog, book
app.register_blueprint(admin.site, url_prefix='')
app.register_blueprint(blog.site, url_prefix='/blog')
app.register_blueprint(book.site, url_prefix='/book')
```
## views/blog.py
```
from flask_flatpages import FlatPages
from .. import create_app

site = Blueprint('blog',__name__)

app = create_app()
flatpages = FlatPages(app)
```
运行时出错
```
Traceback (most recent call last):
File "run.py", line 13, in <module>
app = create_app()
File "/home/honmaple/website/app/__init__.py", line 21, in create_app
register_routes(app)
File "/home/honmaple/website/app/__init__.py", line 29, in register_routes
from .views import admin, blog, book
File "/home/honmaple/website/app/views/blog.py", line 18, in <module>
app = create_app()
File "/home/honmaple/website/app/__init__.py", line 21, in create_app
register_routes(app)
File "/home/honmaple/website/app/__init__.py", line 29, in register_routes
from .views import admin, blog, book
ImportError: cannot import name 'blog'
```
### views/admin.py book.py 与 blog.py 不同的地方就是
```from .. import create_app```
还有我本机是 python3.5,服务器上是 python3.4,本机测试正常，服务器上运行出错，难道是版本的原因

honmaple

2015-11-23 13:05:08 +08:00

原来的问题搞定了，
def register_routes(app):
from .views import admin, blog, book
app.register_blueprint(admin.site, url_prefix='')
app.register_blueprint(blog.site, url_prefix='/blog')
app.register_blueprint(book.site, url_prefix='/book')
改成
def register_routes(app):
from .views import admin, book
app.register_blueprint(admin.site, url_prefix='')
app.register_blueprint(book.site, url_prefix='/book')
from .views.blog import site
app.register_blueprint(site, url_prefix='/blog')
暂时可以运行了，不过数据库又出问题了，现在正在搞定数据库，
python 部署果然是个问题

florije

2015-11-23 13:49:11 +08:00

@honmaple 没有想到是 vim ，只是想是类似的比如说 sublime 的工具，因为很多代码没有格式化(ps ，一般 IDE 都带这种功能，起码我让小伙伴提交前都必须 reformat 一下)，这种就是顺序问题，看报错里面也能看出来端倪，就是报了两次 register_routes(app)这个错误。这个没有详细看代码就是看了报错提示的两个文件，简单分析了下。