Python - Advanced Iteration: Looping Like Crazy(csv, datetime module, strptime method, strftime method)

Head First Python

開発環境

• macOS Sierra - Apple (OS)
• Emacs (Text Editor)
• Python 3.6 (プログラミング言語)

Head First Python (Paul Barry (著)、O'Reilly Media)のChapter 13.(Advanced Iteration: Looping Like Crazy) の SHARPEN YOUR PENCIL(No. 8974) を取り組んでみる。

SHARPEN YOUR PENCIL(No. 8974)

コード(Emacs)

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

import datetime
import pprint


def convert2ampm(time24: str) -> str:
    return datetime.datetime.strptime(time24, '%H:%M').strftime('%I:%M%p')

with open('buzzers.csv') as data:
    ignore = data.readline()
    flights = {}
    for line in data:
        k, v = line.strip().split(',')
        flights[k] = v

pprint.pprint(flights)
print()

flights2 = {}

for k, v in flights.items():
    flights2[convert2ampm(k)] = v.title()

pprint.pprint(flights2)

入出力結果(Terminal, IPython)

$ ./sample1.py
{'09:35': 'FREEPORT',
 '09:55': 'WEST END',
 '10:45': 'TREASURE CAY',
 '11:45': 'ROCK SOUND',
 '12:00': 'TREASURE CAY',
 '17:00': 'FREEPORT',
 '17:55': 'ROCK SOUND',
 '19:00': 'WEST END'}

{'05:00PM': 'Freeport',
 '05:55PM': 'Rock Sound',
 '07:00PM': 'West End',
 '09:35AM': 'Freeport',
 '09:55AM': 'West End',
 '10:45AM': 'Treasure Cay',
 '11:45AM': 'Rock Sound',
 '12:00PM': 'Treasure Cay'}
$