March 2018
Beginner to intermediate
624 pages
16h 10m
Japanese
Content preview from Head First Python 第2版 ―頭とからだで覚えるPythonの基本
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Flask
の時間
Windows
では、
hello_flask.py
ファイルがあるフォルダでコマンドプロンプトを開きます
（ヒント：ファイルエクスプローラーでフォルダを開いている場合には、［
Shift
］キーとマウスの右
ボタンを同時に押してコンテキストメニューを開き、［コマンドウィンドウをここで開く］を選びま
す）。
Windows
コマンドラインの準備ができたら、次のコマンドを入力して
Flask
アプリケーション
を開始します。
C:\webapp> py -3 hello_flask.py
macOS
や
Linux
では、ターミナルウィンドウで次のコマンドを入力します。このコマンドは、必
ず
hello_flask.py
ファイルがあるフォルダで実行してください。
$ python3 hello_flask.py
どの
OS
を使っていても、これ以降は
Flask
が引き継ぎ、組み込み
Web
サーバが動作するたびに画
面にステータスメッセージを表示します。起動直後は、
Flask
サーバが稼働し、
Flask
のテストアド
レス（
127.0.0.1
）とプロトコルポート番号（
5000
）でリクエストに対応するために待機している
ことを示します。
* Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
Flask
の
Web
サーバは準備が完了して待機しています。次はどうするのでしょうか？ブラウザを
使って
Web
サーバとやり取りしてみましょう。ブラウザを開き、
Flask
サーバの開始 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.