July 2018
Intermediate to advanced
596 pages
13h 35m
Japanese
Content preview from Pythonによるデータ分析入門 第2版 ―NumPy、pandasを使ったデータ処理
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
527
付録
B
IPython
システム上級編
「2章 Pythonの基 礎、IPythonとJupyterNotebook」では
IPython
シェルと
Jupyter Notebook
の
基礎を学びました。この章ではコマンドラインあるいは
Jupyter Notebook
から呼び出すことのできる、
IPython
システムのいくつかの機能について掘り下げ、紹介します。
B.1
コマンド履歴
IPython
はディスク上に小さなデータベースを作成し、ここにコマンドの実行履歴テキストを保管し
ます。これにより、次のような機能が提供されています。
●
最小限のキータッチによるコマンド履歴の検索と履歴からの補完、実行
●
IPython
セッション間でのコマンド履歴の共有
●
コマンド入出力の履歴のファイルへの保管
ただし、それぞれのセルにコマンド入出力の履歴がそのまま蓄積されるというのは
Jupyter Notebook
環境の特徴そ
のものです。このため、上記の機能の有用性はむしろ
IPython
シェル環境で発揮されま
す。
B.1.1
コマンド履歴の検索とその再利用
IPython
シェルでは以前に実行したコマンドやコードを検索し、もう一度実行することができます。
これは
%run
コマンドのような、あるコード片を繰り返して何度も実行したいというような場面で特に有
用です。例えば次のような
%run
コマンドを実行していたとしましょう。
In[7]: %run first/second/third/data_script.py
その結果 ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.