FlaskScript
Flask Script
Flask 的开发 Web 服务器支持很多启动设置选项，但只能在脚本中作为参数传给app.run()函数。
这种方式并不十分方便，传递设置选项的理想方式是使用命令行参数。
Flask-Script 是一个 Flask 扩展，为 Flask 程序添加了一个命令行解析器。Flask-Script 自带
了一组常用选项，而且还支持自定义命令。
安装
使用pip安装
(venv) { flasky } HEAD » pip install flask-script
Collecting flask-script
Downloading Flask-Script-2.0.5.tar.gz (42kB)
100% |████████████████████████████████| 51kB 76kB/s
Requirement already satisfied: Flask in ./venv/lib/python2.7/site-packages (from flask-script)
Requirement already satisfied: itsdangerous>=0.21 in ./venv/lib/python2.7/site-packages (from Flask->flask-script)
Requirement already satisfied: click>=2.0 in ./venv/lib/python2.7/site-packages (from Flask->flask-script)
Requirement already satisfied: Jinja2>=2.4 in ./venv/lib/python2.7/site-packages (from Flask->flask-script)
Requirement already satisfied: Werkzeug>=0.7 in ./venv/lib/python2.7/site-packages (from Flask->flask-script)
Requirement already satisfied: MarkupSafe in ./venv/lib/python2.7/site-packages (from Jinja2>=2.4->Flask->flask-script)
Building wheels for collected packages: flask-script
Running setup.py bdist_wheel for flask-script ... done
Stored in directory: /home/Spike/.cache/pip/wheels/e2/ea/d8/8d114e46cef819f7d9879504a7f9cb2a88a479af2858223d9f
Successfully built flask-script
Installing collected packages: flask-script
Successfully installed flask-script-2.0.5
代码修改
from flask import Flask
from flask_script import Manager
app = Flask(__name__)
manager = Manager(app)
@app.route('/')
def index():
return '<h1>Hello World!</h1>'
@app.route('/user/<name>')
def user(name):
return '<h1>Hello, %s!</h1>' % name
if __name__ == '__main__':
manager.run()
服务改用manager.run()启动，而不是app.run()
运行
(venv) { flasky } HEAD » python hello.py
usage: hello.py [-?] {shell,runserver} ...
positional arguments:
{shell,runserver}
shell Runs a Python shell inside Flask application context.
runserver Runs the Flask development server i.e. app.run()
optional arguments:
-?, --help show this help message and exit
可以看出runserver参数用来启动服务
(venv) { flasky } HEAD » python hello.py runserver --help
usage: hello.py runserver [-?] [-h HOST] [-p PORT] [--threaded]
[--processes PROCESSES] [--passthrough-errors] [-d]
[-D] [-r] [-R]
Runs the Flask development server i.e. app.run()
optional arguments:
-?, --help show this help message and exit
-h HOST, --host HOST
-p PORT, --port PORT
--threaded
--processes PROCESSES
--passthrough-errors
-d, --debug enable the Werkzeug debugger (DO NOT use in production
code)
-D, --no-debug disable the Werkzeug debugger
-r, --reload monitor Python files for changes (not 100{'const':
True, 'help': 'monitor Python files for changes (not
100% safe for production use)', 'option_strings':
['-r', '--reload'], 'dest': 'use_reloader',
'required': False, 'nargs': 0, 'choices': None,
'default': None, 'prog': 'hello.py runserver',
'container': <argparse._ArgumentGroup object at
0xffac7dcc>, 'type': None, 'metavar': None}afe for
production use)
-R, --no-reload do not monitor Python files for changes
--host参数告诉 Web 服务器在哪个网络接口上监听来自客户端的连接
默认情况下，Flask 开发 Web 服务器监听 localhost 上的连接
默认只可以本地访问
(venv) { flasky } HEAD » python hello.py runserver
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
其他电脑通过运行服务的电脑的IP访问
(venv) { flasky } HEAD » python hello.py runserver --host 0.0.0.0
* Running on http://0.0.0.0:5000/ (Press CTRL+C to quit)
