查看“Flask基础”的源代码



=install =

<pre>

mkdir myproject
$ cd myproject
$ python3 -m venv venv

. venv/bin/activate

$ pip install Flask


vi hello.py

from flask import Flask

app = Flask(__name__)

@app.route("/")
def hello_world():
    return "<p>Hello, World!</p>"

flask  run 
 * Serving Flask app 'hello' (lazy loading)
 * Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)

Now head over to http://127.0.0.1:5000/, and you should see your hello world greeting.

</pre>

=see also=
[https://flask.palletsprojects.com/en/2.0.x/quickstart/ flask quickstart]