Workarounds for using multiple configuration files in Python's web framework Flask

Some frameworks natively support multiple configuration files, such as Expressjs under Ruby on Rails,nodejs. Although flask under Python natively supports profile management, it is not so convenient to use From_object and From_envvar alone. Is there a better way?

The answer is flask-environments this bag. It can automatically select the development environment configuration or production environment configuration through the FLASK_ENV environment variable. Before you use it, install it first:
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$ sudo pip install flask-environments

Then modify the config.py, write the common configuration and default configuration to the Config class, and write the classes for each environment for the special configuration of the environment:
Copy CodeThe code is as follows:

# config.py
Import OS

Class Config (object):
DEBUG = True
BASEDIR = Os.path.abspath (Os.path.dirname (__file__))

HOST = ' 0.0.0.0 '
PORT = ' 8000 '

Class Development (config): # Inherit from Config
Pass

Class Production (Config):
DEBUG = False
HOST = ' 127.0.0.1
PORT = 14000

Then load the configuration where the App object is generated:
Copy CodeThe code is as follows:

From flask import Flask
From flask_environments Import environments

App = Flask (__name__)
env = environments (APP)
Env.from_object (' config ')

This way, the development configuration is loaded by default when it is started by App.run (). To start a production environment, set the environment variable flask_env=production first:
Copy CodeThe code is as follows:

$ flask_env=production gunicorn-b 127.0.0.1:14000 Myapp:app

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