Python - Types and Operations(Indexing, slicing, and del)

Learning Python
(Oreilly & Associates Inc)
Mark Lutz (著)
(邦訳版)

開発環境

• OS X Mavericks - Apple(OS)
• Emacs (CUI)、BBEdit - Bare Bones Software, Inc. (GUI) (Text Editor)
• Python 3.4 (プログラミング言語)

Learning Python (Mark Lutz (著)、Oreilly & Associates Inc)のPART Ⅱ.(Types and Operations)、Test Your Knowledge: Part II Exercises 3.(Indexing, slicing, and del)を解いてみる。

その他参考書籍

• Pythonチュートリアル 第2版
• Python クックブック 第2版 (原書(最新版))

3.(Indexing, slicing, and del)

コード(BBEdit)

sample3.py

#!/usr/bin/env python3
#-*- coding: utf-8 -*-

l = [1, 2, 3, 4]
print(l)

l[2] = []
print(l)                                # [1, 2, [], 4]

l[2:3] = []
print(l)                                # [1, 2, 4]

del l[0]
print(l)                                # [2, 4]

del l[1:]
print(l)                                # [2]

try:
    l[1:2] = 1
    print(l)
except Exception as err:
    print(type(err), err)

入出力結果(Terminal, IPython)

$ ./sample3.py
[1, 2, 3, 4]
[1, 2, [], 4]
[1, 2, 4]
[2, 4]
[2]
<class 'TypeError'> can only assign an iterable
$