freeCodeCamp/curriculum/challenges/german/07-scientific-computing-with-python/scientific-computing-with-python-projects/time-calculator.md

id, title, challengeType, forumTopicId, dashedName

id	title	challengeType	forumTopicId	dashedName
5e444136903586ffb414c94d	Zeitrechner	23	462360	time-calculator

--description--

Erstelle eine Funktion namens add_time, die zwei notwendige Parameter und einen optionalen Parameter enthält:

• eine Startzeit im 12-Stunden-Format (endend mit AM oder PM)
• eine Zeitdauer, die die Anzahl der Stunden und Minuten angibt
• (optional) ein Anfangstag der Woche, Groß- und Kleinschreibung wird nicht berücksichtigt

Die Funktion sollte die Zeitdauer zur Startzeit hinzufügen und das Ergebnis zurückgeben.

Wenn das Ergebnis am nächsten Tag ist, sollte es (next day) nach der Zeit anzeigen. Wenn das Ergebnis mehr als einen Tag später ist, sollte es (n days later) hinter der Zeit anzeigen, wobei "n" die Anzahl der Tage ist.

Wenn die Funktion den optionalen Starttag des Wochen-Parameters erhalten hat, dann sollte die Ausgabe den Wochentag des Ergebnisses anzeigen. Der Wochentag in der Ausgabe sollte nach der Zeit und vor der Anzahl der Tage später erscheinen.

Unten findest du einige Beispiele für verschiedene Fälle, die deine Funktion bearbeiten soll. Achte auf den Abstand und auf die Satzzeichen der Ergebnisse.

add_time('3:00 PM', '3:10')
# Returns: 6:10 PM

add_time('11:30 AM', '2:32', 'Monday')
# Returns: 2:02 PM, Monday

add_time('11:43 AM', '00:20')
# Returns: 12:03 PM

add_time('10:10 PM', '3:30')
# Returns: 1:40 AM (next day)

add_time('11:43 PM', '24:20', 'tueSday')
# Returns: 12:03 AM, Thursday (2 days later)

add_time('6:30 PM', '205:12')
# Returns: 7:42 AM (9 days later)

Importiere keine Python-Bibliotheken. Nimm an, dass die Startzeiten gültige Zeiten sind. Die Minuten in der Zeitdauer werden als ganze Zahl, kleiner als 60 angezeigt. Die Stunde kann aber jede ganze Zahl sein.

--hints--

Calling add_time('3:30 PM', '2:12') should return '5:42 PM'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
import time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_same_period(self):
        actual = time_calculator.add_time("3:30 PM", "2:12")
        expected = "5:42 PM"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "3:30 PM", "2:12" to return "5:42 PM"')  
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('11:55 AM', '3:12') should return '3:07 PM'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_different_period(self):
        actual = time_calculator.add_time("11:55 AM", "3:12")
        expected = "3:07 PM"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "11:55 AM", "3:12" to return "3:07 PM"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Expected time to end with '(next day)' when it is the next day.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_next_day(self):
        actual = time_calculator.add_time("9:15 PM", "5:30")
        expected = "2:45 AM (next day)"
        self.assertEqual(actual, expected, 'Expected time to end with "(next day)" when it is the next day.')
          `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Expected period to change from AM to PM at 12:00.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_period_change_at_twelve(self):
        actual = time_calculator.add_time("11:40 AM", "0:25")
        expected = "12:05 PM"
        self.assertEqual(actual, expected, 'Expected period to change from AM to PM at 12:00')
          `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('2:59 AM', '24:00') should return '2:59 AM (next day)'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_twenty_four(self):
        actual = time_calculator.add_time("2:59 AM", "24:00")
        expected = "2:59 AM (next day)"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "2:59 AM", "24:00" to return "2:59 AM (next day)"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('11:59 PM', '24:05') should return '12:04 AM (2 days later)'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_two_days_later(self):
        actual = time_calculator.add_time("11:59 PM", "24:05")
        expected = "12:04 AM (2 days later)"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "11:59 PM", "24:05" to return "12:04 AM (2 days later)"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('8:16 PM', '466:02') should return '6:18 AM (20 days later)'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_high_duration(self):
        actual = time_calculator.add_time("8:16 PM", "466:02")
        expected = "6:18 AM (20 days later)"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "8:16 PM", "466:02" to return "6:18 AM (20 days later)"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Expected adding 0:00 to return the initial time.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_no_change(self):
        actual = time_calculator.add_time("5:01 AM", "0:00")
        expected = "5:01 AM"
        self.assertEqual(actual, expected, 'Expected adding 0:00 to return initial time.')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('3:30 PM', '2:12', 'Monday')should return '5:42 PM, Monday'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_same_period_with_day(self):
        actual = time_calculator.add_time("3:30 PM", "2:12", "Monday")
        expected = "5:42 PM, Monday"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "3:30 PM", "2:12", "Monday" to return "5:42 PM, Monday"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('2:59 AM', '24:00', 'saturDay') should return '2:59 AM, Sunday (next day)'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_twenty_four_with_day(self):
        actual = time_calculator.add_time("2:59 AM", "24:00", "saturDay")
        expected = "2:59 AM, Sunday (next day)"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "2:59 AM", "24:00", "saturDay" to return "2:59 AM, Sunday (next day)"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('11:59 PM', '24:05', 'Wednesday') should return '12:04 AM, Friday (2 days later)'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_two_days_later_with_day(self):
        actual = time_calculator.add_time("11:59 PM", "24:05", "Wednesday")
        expected = "12:04 AM, Friday (2 days later)"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "11:59 PM", "24:05", "Wednesday" to return "12:04 AM, Friday (2 days later)"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

Calling add_time('8:16 PM', '466:02', 'tuesday')should return '6:18 AM, Monday (20 days later)'.

({
  test: () => {
    pyodide.FS.writeFile('/home/pyodide/time_calculator.py', code);
    pyodide.FS.writeFile('/home/pyodide/test_module.py', `
import unittest
time_calculator
from importlib import reload

reload(time_calculator)


class UnitTests(unittest.TestCase):
    maxDiff = None
    def test_high_duration_with_day(self):
        actual = time_calculator.add_time("8:16 PM", "466:02", "tuesday")
        expected = "6:18 AM, Monday (20 days later)"
        self.assertEqual(actual, expected, 'Expected calling "add_time()" with "8:16 PM", "466:02", "tuesday" to return "6:18 AM, Monday (20 days later)"')
        `);
    const testCode = `
from unittest import main
import test_module
from importlib import reload

reload(test_module)
t = main(module='test_module', exit=False)
t.result.wasSuccessful()
`;
    const out = __pyodide.runPython(testCode);
    assert(out);
  }
})

--seed--

--seed-contents--

def add_time(start, duration):





    return new_time

--solutions--

def add_time(start, duration, day=''):
    start_arr = start[0:-3].split(':')
    dur_arr = duration.split(':')
    tail = ''
    # converting to 24h format
    if 'AM' in start:
        if start_arr[0] == '12':
            start_arr[0] = '00'
    elif 'PM' in start:
        if start_arr[0] == '12':
            start_arr[0] = '12'
        else:
            start_arr[0] = f'{int(start_arr[0]) + 12}'

    # adding minutes
    sum_m = int(start_arr[1]) + int(dur_arr[1])
    if sum_m > 59:

        if (sum_m - 60 * (sum_m//60)) < 10:
            mins = f'0{(sum_m - 60 * (sum_m//60))}'
            dur_arr[0] = int(dur_arr[0]) + sum_m//60

        else:    
            mins = sum_m - 60 * (sum_m//60)
            dur_arr[0] = int(dur_arr[0]) + sum_m//60
    else:
        if sum_m < 10:
            mins = f'0{sum_m}'
        else:
            mins = sum_m

    #adding hours
    sum_h = int(start_arr[0]) + int(dur_arr[0])
    if sum_h < 24:
        hours= sum_h
        #time_24 = f'{hours}:{mins}'
    else:
        days_after = sum_h//24
        if days_after == 1:
            hours = sum_h - 24
            tail = ' (next day)'
        else:
            hours = sum_h - 24 * days_after
            tail = f' ({days_after} days later)'

    #converting back to AM/PM
    if hours == 0:
        hours = 12
        time = f'{hours}:{mins} AM'
        final_time = f'{time}{tail}'
    elif hours < 12:
        time = f'{hours}:{mins} AM'
        final_time = f'{time}{tail}'
    else:
        if hours > 12:
            hours = hours - 12
        time = f'{hours}:{mins} PM'
        final_time = f'{time}{tail}'

    #days of the week
    week = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']
    if day:
        day = day.capitalize()
        if not tail:
            final_time = f'{time}, {day}'
        elif tail == ' (next day)':
            index = week.index(day) + 1
            if index == 7:
                index = 0
            week_day = f', {week[index]}'
            final_time = f'{time}{week_day}{tail}'
        elif tail:
            index = (week.index(day) + days_after) % 7
            week_day = f', {week[index]}'
            final_time = f'{time}{week_day}{tail}'


    print('\n')
    print(final_time)
    print('\n')
    return final_time