Mastering Flask Web Development - Second Edition

Simple application

Flask is very powerful, but will most definitely not get in your way. You can use it to create a simple web application using a single file. Our aim is to create a project that is structured in a way that it can scale and be easy to understand. For now, we will create a config file first. In the file named config.py, add the following:

class Config(object): 
    pass 
 
class ProdConfig(Config): 
    pass 
 
class DevConfig(Config): 
    DEBUG = True 

Now, in another file named main.py, add the following:

from flask import Flask 
from config import DevConfig 
 
app = Flask(__name__) 
app.config.from_object(DevConfig) 
 
@app.route('/') 
def home(): 
    return '<h1>Hello World!</h1>' 
 
if __name__ == '__main__': 
    app.run() 

For anyone who is familiar with the ...