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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py.test --pep8
はすごい
回り道
違反メッセージを理解する
pytest
と
pep8
プラグインは、
vsearch.py
で 5 つの問題を指摘しています。
1
番目の問題は、アノテーションのコロンの後に空白がないことです。これが
3
か所あり
ます。
1
番目のメッセージを見てください。
pytest
は、キャレット（
^
）で問題のある場所
を正確に示しています。
4
番目と
5
番目も、コロンの後の空白がないという指摘です。
1
番目の指摘は
2
行目、
4
番
目と
5
番目の指摘は
7
行目の問題を指摘しています。問題を見ると、この間違いを
3
か所（
2
行目で
1
回と
7
行目で
2
回）で繰り返していることがわかります。この修正は簡単です。コ
ロンの後に1 つの空白文字を追加するだけです。
2
番目の指摘は、
3
行目の行末に余計な空白が入っていると言っています。
この問題も簡単に修正できます。末尾のすべてのホワイトスペースを取り除くのです。
3
番目の指摘は、
7
行目の行頭がおかしいと言っています。
192
4
章
...:2:25: E231 missing whitespace after ':'
def search4vowels(phrase:str) -> set:
^
問題の内容
問題の場所
...:3:56: W291 trailing whitespace
"""
指定されたフレーズ内の母音を返す。
"""
^
問題の内容
問題の場所
...7:1: E302 expected 2 blank lines, found 1
def search4letters(phrase:str, ...
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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.