Memo of Flask

Flask

• Welcome to Flask — Flask Documentation (1.1.x)
  • Flask (web framework) - Wikipedia Flask is a micro web framework written in Python. It is classified as a microframework because it does not require particular tools or libraries.
• Installation — Flask Documentation (1.1.x)
• Quickstart — Flask Documentation (1.1.x)
• Static Files — Flask Documentation (1.1.x)
  • staticの扱い
• Adding a favicon — Flask Documentation (1.1.x)
• Adding an iOS home screen icon for your website | Create.net
  • iPhoneのHome scrreen用はapple-touch-icon

mod_wsgi and Apache2

• mod_wsgi (Apache) — Flask Documentation (1.1.x)
  • Web Server Gateway Interface - Wikipedia The Web Server Gateway Interface (WSGI) is a simple calling convention for web servers to forward requests to web applications or frameworks written in the Python programming language.
  • mod_wsgiはpipで入れようねって話 - Qiita よく分からん。結局Flask公式通りに、mod_wsgiもapt-getでinstallした。
  • mod_wsgiをなぜかpipでインストールできない時 - Qiita RuntimeError: The 'apxs' command appears not to be installed or is not executable.
  • raspbian stretch - Apache2 on Raspberry pi 3 - cannot install WSGI module - Raspberry Pi Stack Exchange sudo apt update
  • python - Invalid command WSGIDaemonProcess Deploy Django application on CentOS 6.7 - Stack Overflow

• venv環境ではactivate_this.pyを実行する処理を書いてね、とあるが、activate_this.pyがない。
  • python - No activate_this.py file in venv / pyvenv - Stack Overflow ええ、もうないです。
  • mod wsgi - How can I activate a pyvenv vitrualenv from within python? (activate_this.py was removed?) - Stack Overflow ええ、もうないです。
  • virtualenv/activate_this.py at main · pypa/virtualenv · GitHub Pathを調整する小さいスクリプトです。
  • Virtual Environments — mod_wsgi 4.8.0 documentation mod_wsgi公式

• Apache2
  • apache - Site does not exist error for a2ensite - Stack Overflow

• Minimal Apache configuration for deploying a flask app (Ubuntu 18.04) | Codementor 環境構築例: Apache2, mod_wsgi and Flask
• Apache To Python For mod_wsgi - Qiita 環境構築例: Apache2 and mod_wsgi
• ラズパイにApache2を導入してみる - Qiita 環境構築例: Apache2 on Raspberry Pi

Jinja2

• Jinja — Jinja Documentation (2.11.x)
• Template Designer Documentation — Jinja Documentation (2.11.x)

from jinja2 import Template
template = Template('Hello {{ name }}!')
template.render(name='John Doe')

from jinja2 import Environment, FileSystemLoader
env = Environment(loader=FileSystemLoader('templates'))
template = env.get_template('hello.html')
with open('output.html', 'w') as f:
    f.write(template.render(name='John Doe'))

• python - Remove unnecessary whitespace from Jinja rendered template - Stack Overflow
  • htmlから無駄なスペースを除く。

app.jinja_env.trim_blocks = True
app.jinja_env.lstrip_blocks = True

Abema API

見やすいAbema番組表がほしい、というのがそもそものモチベーション。

• abemaTV の番組表 json | ニコラボ Authorization:bearerの値はWeb browserのdev toolで確認。
• AbemaTV Timetable Viewer のソースコード

Environment

• Python 3.7.3
• Flask 1.1.2
• mod-wsgi 4.7.1
• Apache/2.4.38
• Raspberry Pi 2 Model B