Das deutsche Python-Forum

Code: Alles auswählen

#! /usr/bin/python3
###Klassendefinition###
class Kalender(object):
    '''
    Instanzen dieses Objekts nehmen Instanzen der Klasse Termin auf und
    speichern sie in einer Liste
    '''
    def __init__(self):
        self.__kalenderliste = []

    def getListe(self):
        return self.__kalenderliste

    def termineintragen(self, termin):
        self.__kalenderliste.append(termin)

    def termineanzeigen(self):
        for eintrag in self.__kalenderliste:
            print(eintrag)

        
class Termin(object):
    '''
    Instanzen dieser Klasse repräsentieren einen Termin
    '''
    def __init__(self, datum, uhrzeit, ueberschrift, beschreibung):
        self.__datum = str(datum)
        self.__uhrzeit = str(uhrzeit)
        self.__ueberschrift = ueberschrift
        self.__beschreibung = beschreibung


    def __repr__(self):
        return ("{0:} {1:} {2:} {3:}".format(self.__datum,
                                             self.__uhrzeit,
                                             self.__ueberschrift,
                                             self.__beschreibung)
                                            )


### Hauptprogramm ###
if __name__ == "__main__":
    k = Kalender()
    t = Termin("11.11.2014", "11:11", "Hellau", "Hellau rufen")
    t2 = Termin("12.12.2014", "12:30", "Arbeiten", "Mittagessen kochen")
    
    k.termineintragen(t)
    k.termineintragen(t2)
    k.termineanzeigen()

Code: Alles auswählen

from __future__ import print_function
import csv
from datetime import datetime as DateTime

ISO_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S'


class Appointment(object):
    
    def __init__(self, timestamp, subject, description):
        self.timestamp = timestamp
        self.subject = subject
        self.description = description

    def __str__(self):
        return (
            '{0.timestamp:%Y-%m-%d %H:%M} {0.subject} - {0.description}'.format(
                self
            )
        )

    def as_row(self):
        return [
            format(self.timestamp, ISO_TIME_FORMAT),
            self.subject,
            self.description
        ]

    @classmethod
    def from_row(cls, row):
        timestamp, subject, description = row
        return cls(
            DateTime.strptime(timestamp, ISO_TIME_FORMAT), subject, description
        )


class Calendar(object):
    
    CSV_DELIMITER = ';'

    def __init__(self, appointments=()):
        self.appointments = list()
        self.add_many(appointments)

    def __len__(self):
        return len(self.appointments)

    def __iter__(self):
        return iter(self.appointments)

    def add(self, appointment):
        self.appointments.append(appointment)

    def add_many(self, appointments):
        for appointment in appointments:
            self.add(appointment)

    def save_csv(self, filename):
        with open(filename, 'wb') as csv_file:
            writer = csv.writer(csv_file, delimiter=self.CSV_DELIMITER)
            writer.writerows(appointment.as_row() for appointment in self)

    @classmethod
    def load_csv(cls, filename):
        with open(filename, 'rb') as csv_file:
            reader = csv.reader(csv_file, delimiter=cls.CSV_DELIMITER)
            return cls(Appointment.from_row(row) for row in reader)


def print_calendar(calendar):
    appointment_count = len(calendar)
    print(
        '{0} appointment{1}.'.format(
            appointment_count, '' if appointment_count == 1 else 's'
        )
    )
    for appointment in calendar:
        print(appointment)


def main():
    calendar = Calendar()
    calendar.add_many(
        [
            Appointment(
                DateTime(2014, 11, 11, 11, 11),
                'Hellau',
                'Hellau rufen.'
            ),
            Appointment(
                DateTime(2014, 12, 12, 12, 30),
                'Arbeiten',
                'Mittagessen kochen.'
            ),
        ]
    )
    print_calendar(calendar)
    calendar.save_csv('test.csv')
    another_calendar = Calendar.load_csv('test.csv')
    print_calendar(another_calendar)


if __name__ == '__main__':
    main()

Code: Alles auswählen

2014-11-11T11:11:00;Hellau;Hellau rufen.
2014-12-12T12:30:00;Arbeiten;Mittagessen kochen.

Code: Alles auswählen

import csv
from datetime import datetime as DateTime
 
ISO_TIME_FORMAT = '%Y-%m-%dT%H:%M:%S'
CSV_DELIMITER = ';'

 
class Appointment(object):
   
    def __init__(self, timestamp, subject, description):
        self.timestamp = timestamp
        self.subject = subject
        self.description = description
 
    def __str__(self):
        return (
            '{0.timestamp:%Y-%m-%d %H:%M} {0.subject} - {0.description}'.format(
                self
            )
        )
 
def to_row(appointment):
    return [
        format(appointment.timestamp, ISO_TIME_FORMAT),
        appointment.subject,
        appointment.description
    ]

def from_row(row):
    timestamp, subject, description = row
    return Appointment(
        DateTime.strptime(timestamp, ISO_TIME_FORMAT), subject, description
    )
  

def save_csv(appointments, filename):
    with open(filename, 'w', newline='') as csv_file:
        writer = csv.writer(csv_file, delimiter=CSV_DELIMITER)
        writer.writerows(to_row(appointment) for appointment in appointments)


def load_csv(filename):
    with open(filename, 'r') as csv_file:
        reader = csv.reader(csv_file, delimiter=CSV_DELIMITER)
        return [from_row(row) for row in reader]
 
 
def print_calendar(calendar):
    appointment_count = len(calendar)
    print(
        '{0} appointment{1}.'.format(
            appointment_count, '' if appointment_count == 1 else 's'
        )
    )
    for appointment in calendar:
        print(appointment)
 
 
def main():
    calendar = []
    calendar.extend(
        [
            Appointment(
                DateTime(2014, 11, 11, 11, 11),
                'Hellau',
                'Hellau rufen.'
            ),
            Appointment(
                DateTime(2014, 12, 12, 12, 30),
                'Arbeiten',
                'Mittagessen kochen.'
            ),
        ]
    )
    print_calendar(calendar)
    save_csv(calendar, 'test.csv')
    another_calendar = load_csv('test.csv')
    print_calendar(another_calendar)
 
 
if __name__ == '__main__':
    main()