2018年10月4日木曜日

開発環境

  • macOS High Sierra - Apple
  • Emacs (Text Editor)
  • Python 3.7 (プログラミング言語)

Head First Python 第2版 ―頭とからだで覚えるPythonの基本 (Paul Barry (著)、嶋田 健志 (監修)、木下 哲也 (翻訳)、オライリージャパン)の6章(データの格納と操作 - データをファイルに格納する)、エクササイズ(p. 249)を取り組んでみる。

コード(Emacs)

Python 3

#!/usr/bin/env python3
from flask import Flask, render_template, request
import vsearch

app = Flask(__name__)


@app.route('/search4', methods=['POST'])
def do_search():
    phrase = request.form['phrase']
    letters = request.form['letters']
    title = '検索結果'
    results = str(vsearch.search4letters(phrase, letters))
    return render_template('results.html',
                           the_title=title,
                           the_phrase=phrase,
                           the_letters=letters,
                           the_results=results)


@app.route('/')
@app.route('/entry')
def entry_page() -> str:
    return render_template(
        'entry.html', the_title='Web版のsearch4lettersにようこそ!')


def log_request(req: 'flask_request', res: str) -> None:
    with open('vsearch.log', 'a') as f:
        print(req, res, file=f)


if __name__ == '__main__':
    log_request('req', 'res')
    app.run(debug=True)

入出力結果(Terminal, Jupyter(IPython))

$ ./vsearch4web.py
 * Serving Flask app "vsearch4web" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 178-619-558
  C-c C-c$ bcat vsearch.log 
req res
req res
$ ./vsearch4web.py
 * Serving Flask app "vsearch4web" (lazy loading)
 * Environment: production
   WARNING: Do not use the development server in a production environment.
   Use a production WSGI server instead.
 * Debug mode: on
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
 * Restarting with stat
 * Debugger is active!
 * Debugger PIN: 178-619-558
  C-c C-c$ cat vsearch.log 
req res
req res
req res
req res
$ 

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