Python - Getting Organized: Data Structure Choices - dictionary, key, if, not in
Head First Python: A Learner’s Guide to the Fundamentals of Python Programming, A Brain-Friendly Guide、 Paul Barry(著)、 O’Reilly Mediaの Chapter 6.(Getting Organized: Data Structure Choices)、EXERCISE(50/78)の解答を求めてみる。
Jupyter(コード、入出力結果)
OrganizingData.ipynb
swimmers = {}
for file in swim_files:
name, *_ = swimclub.read_swim_data(file)
if name not in swimmers:
swimmers[name] = []
swimmers[name].append(file)
swimmers
{'Hannah': ['Hannah-13-100m-Free.txt', 'Hannah-13-100m-Back.txt'],
'Darius': ['Darius-13-100m-Back.txt',
'Darius-13-100m-Breast.txt',
'Darius-13-100m-Fly.txt',
'Darius-13-200m-IM.txt'],
'Owen': ['Owen-15-100m-Free.txt'],
'Mike': ['Mike-15-100m-Free.txt',
'Mike-15-100m-Back.txt',
'Mike-15-100m-Fly.txt',
'Mike-15-200m-IM.txt',
'Mike-15-200m-Free.txt'],
'Abi': ['Abi-10-50m-Back.txt',
'Abi-10-50m-Free.txt',
'Abi-10-100m-Back.txt',
'Abi-10-50m-Breast.txt',
'Abi-10-100m-Breast.txt'],
'Ruth': ['Ruth-13-200m-Free.txt',
'Ruth-13-200m-Back.txt',
'Ruth-13-100m-Back.txt',
'Ruth-13-100m-Free.txt',
'Ruth-13-400m-Free.txt'],
'Tasmin': ['Tasmin-15-100m-Back.txt',
'Tasmin-15-100m-Free.txt',
'Tasmin-15-100m-Breast.txt',
'Tasmin-15-200m-Breast.txt'],
'Erika': ['Erika-15-100m-Free.txt',
'Erika-15-200m-Breast.txt',
'Erika-15-100m-Breast.txt'],
'Maria': ['Maria-9-50m-Free.txt'],
'Elba': ['Elba-14-100m-Free.txt'],
'Ali': ['Ali-12-100m-Back.txt', 'Ali-12-100m-Free.txt'],
'Chris': ['Chris-17-100m-Back.txt', 'Chris-17-100m-Breast.txt'],
'Aurora': ['Aurora-13-50m-Free.txt'],
'Katie': ['Katie-9-100m-Breast.txt',
'Katie-9-50m-Fly.txt',
'Katie-9-50m-Breast.txt',
'Katie-9-50m-Back.txt',
'Katie-9-50m-Free.txt',
'Katie-9-100m-Free.txt',
'Katie-9-100m-Back.txt'],
'Alison': ['Alison-14-100m-Breast.txt', 'Alison-14-100m-Free.txt'],
'Emma': ['Emma-13-100m-Free.txt', 'Emma-13-100m-Breast.txt'],
'Calvin': ['Calvin-9-50m-Fly.txt',
'Calvin-9-50m-Back.txt',
'Calvin-9-50m-Free.txt'],
'Blake': ['Blake-15-100m-Free.txt',
'Blake-15-100m-Back.txt',
'Blake-15-100m-Fly.txt'],
'Bill': ['Bill-18-200m-Back.txt', 'Bill-18-100m-Back.txt'],
'Dave': ['Dave-17-100m-Free.txt', 'Dave-17-200m-Back.txt'],
'Lizzie': ['Lizzie-14-100m-Free.txt', 'Lizzie-14-100m-Back.txt'],
'Carl': ['Carl-15-100m-Back.txt']}