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Python - Lists of Numbers: Processing List Data - subtask

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 3.(Lists of Numbers: Processing List Data)、EXERCISE(187/682)の解答を求めてみる。

Jupyter(コード、入出力結果)

Times.ipynb

import os
import statistics

FOLDER = 'swimdata'
FN = 'Darius-13-100m-Fly.txt'

swimmer, age, distance, stroke = FN.removesuffix('.txt').split('-')

with open(os.path.join(FOLDER, FN)) as f:
    lines = f.readlines()
times = lines[0].strip().split(',')
converts = []
for t in times:
    minutes, rest = t.split(':')
    seconds, hundredths = rest.split('.')
    converted_time = int(minutes) * 60 * 100 + int(seconds) * 100 + int(hundredths)
    converts.append(converted_time)
average = statistics.mean(converts)
mins_secs, hundredhs = str(round(average / 100, 2)).split('.')
mins_secs = int(mins_secs)
minutes, seconds = divmod(mins_secs, 60)
average = f'{minutes}:{seconds}.{hundredhs}'

swimmer, age, distance, stroke

('Darius', '13', '100m', 'Fly')

times

['1:27.95', '1:21.07', '1:30.96', '1:23.22', '1:27.95', '1:28.30']

average

'1:26.58'