烧瓶与应用程序混淆 [英] Flask confusion with app

问题描述

我开始一个 flask 项目，并且在我的代码中我有

  from flask import Flask，render_template，abort 
 app = Flask（__ name__）
  

现在到底什么是 app ？

我正在关注本指南，我对结构特别困惑，因为他选择了一个名为 app / 并且是他的 app / __ init __。py 他有

<$从应用程序导入视图

从烧瓶导入Flask
app = Flask（__ name__）

和他的 app / views.py 他有

<$ p $从应用程序导入应用程序

code> app 's？！

解决方案

我觉得主要的困惑是line：

  
 
 
 $ b $你有一个python包（一个包含 __ init __。py  file）命名为app。从这个文件夹中，您现在正在导入您在 __ init __。py 文件中定义的变量app：
 
 
  app = Flask（__ name__）
  
说myproject。然后，您将从myproject导入应用程序
  

中调用

  
 
 
另外，您将从myproject导入视图
导入视图为
 
 pre $   




I am starting a flask project, and in my code I have

from flask import Flask, render_template, abort
app = Flask(__name__)

Now what exactly is app?

I am following this guide and I am particularly confused about the structure because he has chosen to have directory named app/ and is his app/__init__.py he has

from flask import Flask
app = Flask(__name__)
from app import views

and in his app/views.py he has

from app import app

What the hell is it with all these app's?!

解决方案

I think the main confusion is in the line:

from app import app

You have a python package (a folder with __init__.py file) named "app". From this folder, you are now importing the variable "app" that you defined below in __init__.py file:

app = Flask(__name__)

Rename the folder from app to say "myproject". Then you will call

from myproject import app

Also, you will import views as

from myproject import views

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