Pythonポケットリファレンス chapter01〜04

python

Python ポケットリファレンス (Pocket Reference)でPythonを勉強していきます。最初の方はサクサクっとやる。

Chapter01 インストールと環境設定

やっておいた。

Chapter02 Hello Python !

>>> print 'Hello Python !'
Hello Python !

インデントは慣習的にスペース4つ。

Chapter03 Pythonの特徴と強み

>>> import this           
The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!

おお！訳がついてる

Chapter04 Python入門

if分とfor分の組み合わせのところ

>>> a = 1
>>> if a == 1 :
...   a = a+1
...   print a
... 
2
>>> b = [4,3,2,1]
>>> b
[4, 3, 2, 1]
>>> for e in b:
...   if e == a:
...     print e
... 
2

forの次のeは何でもない変数だ。