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Python - List of Files: Functions, Modules and Files - return statement 1

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 4.(List of Files: Functions, Modules & Files)、SHARPEN YOUR PENCIL(206/682)の解答を求めてみる。

Jupyter(コード、入出力結果)

Times.ipynb

import swimclub

swimclub.read_swim_data('Darius-13-100m-Fly.txt')

('Darius',
 '13',
 '100m',
 'Fly',
 ['1:27.95', '1:21.07', '1:30.96', '1:23.22', '1:27.95', '1:28.30'],
 '1:26.58')

コード

swimclub.py

import os
import statistics

FOLDER = "swimdata"


def read_swim_data(filename: str):
    swimmer, age, distance, stroke = filename.removesuffix('.txt').split('-')
    with open(os.path.join(FOLDER, filename)) as f:
        lines = f.readlines()
        times = lines[0].strip().split(',')
    converts = []
    for t in times:
        minutes, rest = t.split(':')
        seconds, hundredths = rest.split('.')
        converts.append(
            int(minutes) * 60 * 100 + int(seconds) * 100 + int(hundredths)
        )
    average = statistics.mean(converts)
    mins_secs, hundredths = str(round(average / 100, 2)).split('.')
    mins_secs = int(mins_secs)
    minutes = mins_secs // 60
    seconds = mins_secs - minutes * 60
    average = str(minutes) + ':' + str(seconds) + '.' + hundredths
    return swimmer, age, distance, stroke, times, average