September 2014
Intermediate to advanced
332 pages
6h 48m
Japanese
Content preview from Python文法詳解
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239
第
7
章
データ型とプロトコル
7.1
ファイル入出力
ファイルの入出力を行うファイルオブジェクトは、組み込み関数
open()
で作成します。
open()
は、
io
モジュールの
io.open()
関数の別名です。
open(
file
,
mode='r'
,
buffering=-1
,
encoding=None
,
errors=None
,
newline=None
,
closefd=True
,
opener=None
)
file
で指定したファイル名を開き、ファイルオブジェクトを返します。
パラメタ
file
−
文字列またはバイト列のファイル名、またはファイルディスクリプタを整数値で指定
します。
mode
−
ファイルモードを、表
7-1
の文字の組み合わせで指定します。省略時は
'rt'
となります。
buffering
−
バッファサイズをバイト数で指定します。バイナリモードでは、
0
を指定すると
バッファリングが無効となります。テキストモードで
1
を指定すると、行バッファリングを行
います。省略時は、ターミナルへのテキスト入出力なら行バッファリング、それ以外ならデフォ
ルトサイズでのバッファリングを行います。
encoding
−
文字列の変換に使用するエンコーディングを指定します。テキストモードでのみ
指定可能です。省略時は、プラットフォームのデフォルトエンコーディングとなります。
errors
−
Unicode
の変換処理で発生するエラーの処理方法を指定します。省略時は、
'strict'
となります。
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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.
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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.