Flask Simple Web Application

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Implementation of the first Web application with the Flask framework

first you need to figure out a few concepts:

1. View: A view is a processor that responds to requests from a Web browser. In Flask, the view is written as a Python function that implements functionality inside. Each view function is a URL that maps to one or more requests.

2. Applications: Used to create application objects, import views, etc.

3. Startup script: The script used to start the Web server, that is, run.py.

The above mentioned "concept" is actually a few steps to implement a Web application, just touch Web development Some things are not particularly clear, for the record here.

I put all the "apps" in the "Apps" folder, in the Flask directory.

Create views.py views and __init__.py initializers in the app folder, respectively.

views.py

 from Import App@app.route ('/') @app. Route ('/index' ) )def  index ():    return"Hello, world! "

__init__.py

 from Import  = Flask (__name__)fromimport views

You can then start the Web server with run.py in scripts.

run.py

# !flask/bin/python  from Import  = True)

Finally run the run.py script, access to 127.0.0.1:5000 can see the implementation of the small program.

Flask Simple Web Application