====== LU12.L02 - Hofladen ====== ===== Funktionen =====


def input_int(prompt):
    """
    reads an integer input from the user
    :param text: the prompt to be shown
    :return: the integer number
    """
    pass
    
def input_float(prompt):
    """
    reads a decimal number input from the user
    :param text: the prompt to be shown
    :return: the decimal number
    """
    pass
    
def find_article(list, name):
    """
    finds an article in the article list
    :param list: the article list
    :param name: the article name to be found
    :return: article or None=not found
    """
    pass

===== Vorgehensschritte ===== * Schritt 1 * Schritt 2 * Schritt 3 - Erstelle eine leere Liste für die Artikel - Eingabe des Artikelnamens - Solange Artikelname nicht ''Exit'' ist - Suche den Artikel in der Liste - Falls keine Artikel gefunden wurde - Erstelle ein neues Artikel-Objekt und speichere es in der Liste - Speichere den Artikelnamen - Eingabe des Preises - Sonst - Ausgabe des aktuellen Bestands - Eingabe der Menge - Addiere die Menge zum Bestand - Eingabe des Artikelnamens - Gib die Artikelliste als Returnwert zurück ===== Sourcecode ===== ==== article.py ====


from dataclasses import dataclass


@dataclass
class Article:
    """
    an article in the farmshop
    """
    name: str
    price: float
    stock: int


if __name__ == '__main__':
    pass

==== shop.py ====


from article import Article


def main():
    article_list = []
    article_name = input('Artikelname > ')
    while article_name != 'Exit':

        article = find_article(article_list, article_name)
        if article is None:
            article = Article(article_name, 0.0, 0)
            article_list.append(article)
            article.price = input_float('Preis       > ')
        else:
            print('Bestand     : ' + str(article.stock))

        amount = input_float('Menge       > ')
        article.stock = (article.stock + amount)
        article_name = input('Artikelname > ')

    return article_list

def input_int(prompt):
    """
    reads an integer input from the user
    :param text: the prompt to be shown
    :return: the integer number
    """
    number = None
    while number is None:
        try:
            number = int(input(prompt))
        except ValueError:
            print("Please, enter a whole number!")
            continue
    return number

def input_float(prompt):
    """
    reads a decimal number input from the user
    :param text: the prompt to be shown
    :return: the decimal number
    """
    number = None
    while number is None:
        try:
            number = float(input(prompt))
        except ValueError:
            print("Please, enter a real number!")
            continue
    return number


def find_article(list, name):
    """
    finds an article in the article list
    :param list: the article list
    :param name: the article name to be found
    :return: article or None=not found
    """
    for article in list:
        if article.name == name:
            return article
    return None

if __name__ == '__main__':
    main()