September 2014
Intermediate to advanced
332 pages
6h 48m
Japanese
Content preview from Python文法詳解
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202
第 6 章 関数とクラス
6.2.4.2
sys.path
に指定された
site-packages
などのディレクトリに、拡張子が
.pth
のファイルがあれ
ば、そのファイルはパス設定ファイルとして読み込まれ、その内容が
sys.path
に登録されます。
ディレクトリ中のパス設定ファイルは、名前をアルファベット順にソートした順番で読み込まれま
す。
パス設定ファイルには、一行に一つ、
sys.path
に追加するディレクトリ名を指定します。ディ
レクトリ名が相対パス名の場合、パス設定ファイルのディレクトリからの相対位置としてディレク
トリを登録します。先頭の文字が
#
の行はコメントとして無視されます。また、
import
ではじま
る行は、
Python
スクリプトとしてそのまま実行されます。
#
パス設定ファイル
spam.pth
の例
spam
/usr/local/ham/lib
import egg
6.2.5
パッケージ
パッケージはモジュールを格納するディレクトリで、複数のモジュールを、階層的に管理できま
す。ディレクトリに、
__init__.py
という名前のファイルがあるディレクトリは、パッケージと
してインポートできます。パッケージ内のサブディレクトリも、
__init__.py
ファイルがあれば
サブパッケージとしてインポートできます。
__init__.py
ファイルは、内容が空（サイズが
0
）の
ファイルでも、パッケージとして認識されます。
ソースディレクトリ
spam
ディレクトリ
__init_
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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.