Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Introduction to Flask
Search
Sébastien Fievet
February 23, 2017
Technology
0
62
Introduction to Flask
Workshop given for a Swisscom Digital Lab meetup at EPFL
Sébastien Fievet
February 23, 2017
Tweet
Share
More Decks by Sébastien Fievet
See All by Sébastien Fievet
Django Round-Up – Meetup Django CH #28
zyegfryed
0
60
Django Round-Up – Meetup Django CH #25
zyegfryed
0
55
Django Round-Up – Meetup Django CH #23
zyegfryed
0
51
Django Round-Up – Meetup Django CH #21
zyegfryed
0
68
Django Round-Up – Meetup Django CH #20
zyegfryed
0
68
Django Round-Up – Meetup Django CH #19
zyegfryed
2
87
[Django] URL prefix with runserver
zyegfryed
0
1.4k
[Django] Generating PDF with PDFForm
zyegfryed
0
86
[Django] RESTful API
zyegfryed
1
220
Other Decks in Technology
See All in Technology
プロポーザルのコツ ~ Kaigi on Rails 2025 初参加で3名の登壇を実現 ~
naro143
1
240
コンテキストエンジニアリング入門〜AI Coding Agent作りで学ぶ文脈設計〜
kworkdev
PRO
1
980
Simplifying Cloud Native app testing across environments with Dapr and Microcks
salaboy
0
150
プレーリーカードを活用しよう❗❗デジタル名刺交換からはじまるイベント会場交流のススメ
tsukaman
0
150
カンファレンスに託児サポートがあるということ / Having Childcare Support at Conferences
nobu09
1
570
小学4年生夏休みの自由研究「ぼくと Copilot エージェント」
taichinakamura
0
700
Railsの話をしよう
yahonda
0
110
ビズリーチ求職者検索におけるPLMとLLMの活用 / Search Engineering MEET UP_2-1
visional_engineering_and_design
1
120
ComposeではないコードをCompose化する case ビズリーチ / DroidKaigi 2025 koyasai
visional_engineering_and_design
0
110
Git in Team
kawaguti
PRO
3
370
業務効率化をさらに加速させる、ノーコードツールとStep Functionsのハイブリッド化
smt7174
2
140
アイテムレビュー機能導入からの学びと改善
zozotech
PRO
0
150
Featured
See All Featured
Why Our Code Smells
bkeepers
PRO
340
57k
Code Review Best Practice
trishagee
72
19k
Designing for humans not robots
tammielis
254
26k
Agile that works and the tools we love
rasmusluckow
331
21k
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
15k
Context Engineering - Making Every Token Count
addyosmani
6
250
Practical Orchestrator
shlominoach
190
11k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
20
1.2k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
140
34k
YesSQL, Process and Tooling at Scale
rocio
173
14k
Statistics for Hackers
jakevdp
799
220k
A designer walks into a library…
pauljervisheath
209
24k
Transcript
Introduction to Flask Sébastien Fievet Swisscom Digital Lab at EPFL
Prerequisites
$ python --version Python 2.7.12 https://www.python.org/downloads
$ pip --version pip 9.0.1 https://pip.pypa.io/en/stable/installing/
$ pip install virtualenv $ virtualenv --version 13.1.2 https://virtualenv.pypa.io/en/stable/installation/
$ git clone \ https://github.com/zyegfryed/intro_to_flask.git $ cd intro_to_flask $ virtualenv
.venv $ source .venv/bin/activate
Hello Flask!
–Deny “What… Why Flask?”
–http://flask.pocoo.org/ “Flask is a microframework for Python based on Werkzeug,
Jinja 2 and good intentions.”
Diving In https://github.com/zyegfryed/intro_to_flask/tree/01_intro
$ pip install Flask http://flask.pocoo.org/docs/0.12/installation/
# app.y from flask import Flask app = Flask(__name__) @app.route('/')
def hello_world(): return 'Hello, World!'
$ git checkout 01_intro $ export FLASK_APP=app.py $ flask run
$ curl http://127.0.0.1:5000/ Hello, World!
Chatbot
Diving In https://github.com/zyegfryed/intro_to_flask/tree/02_chatbot
$ pip install fbmessenger https://github.com/rehabstudio/fbmessenger
# app.py @app.route('/webhook', methods=['GET', 'POST']) def webhook(): if request.method ==
'GET': if request.args.get('hub.verify_token') == \ os.environ.get('FB_VERIFY_TOKEN'): return request.args.get('hub.challenge') raise ValueError('FB_VERIFY_TOKEN does not match.')
# app.py @app.route('/webhook', methods=['GET', 'POST']) def webhook(): […] elif request.method
== 'POST': messenger.handle(request.get_json(force=True)) return ''
# app.py from fbmessenger import BaseMessenger from fbmessenger import elements
class Messenger(BaseMessenger): def message(self, message): element = elements.Text('Received: {0}’.format( message['message']['text'])) self.send(element.to_dict()) […]
# app.py messenger = \ Messenger(os.environ.get(‘FB_PAGE_TOKEN’))
$ ngrok --version ngrok version 2.1.18 https://ngrok.com/download
Messenger https://developers.facebook.com/docs/messenger- platform/guides/setup
$ git checkout 02_chatbot $ export FB_VERIFY_TOKEN=… $ export FB_PAGE_TOKEN=…
$ flask run - - - - - - - - - — - - - - - - - - - - - - $ ngrok http 5000
Async
Diving In https://github.com/zyegfryed/intro_to_flask/tree/03_async
# app.py from redis import StrictRedis redis = StrictRedis() @job('default',
connection=redis) def messenger_handle(message): messenger.handle(message) @app.route('/webhook', methods=['GET', 'POST']) def webhook(): […] elif request.method == 'POST': messenger_handle.delay(request.get_json(force=True)) return ''
$ redis-server --version Redis server v=3.2.8 https://redis.io/download
$ pip install rq http://python-rq.org/
$ git checkout 03_async $ export FB_PAGE_TOKEN=… $ rqworker default
- - - - - - - - - — - - - - - - - - - - - - $ redis-server
Links • https://github.com/zyegfryed/intro_to_flask • https://www.python.org/downloads/ • https://pip.pypa.io/en/stable/installing/ • http://flask.pocoo.org/ •
http://flask.pocoo.org/docs/0.12/quickstart/ • https://developers.facebook.com/docs/messenger-platform/guides/setup • https://github.com/rehabstudio/fbmessenger • https://redis.io/download • http://python-rq.org/ • https://github.com/rehabstudio/fbmessenger