Strange message when sorting objects of a class

Question

if I run this programm in order to sort my list after the attribute "name", I only receive this:

[<__main__.Gericht object at 0x00000190D292FE50>, <__main__.Gericht object at 0x00000190D292FD90>, <__main__.Gericht object at 0x00000190D292FEB0>, <__main__.Gericht object at 0x00000190D292FDF0>]

Could you help me to get the real results?

class Gericht:

    def __init__(self, name, preis, calories, alergene = []):
        self.name = name
        self.preis = preis
        self.calories = calories
        self.alergene = alergene

def sortbyName(input):
    sort = sorted(input, key=lambda gericht: gericht.name)
    return sort

speisekarte = [Gericht("Spaghetti", 7.5, 750, [1, "a"]), Gericht("Brotstulle", 3, 250, []), Gericht("Tofu", 13, 634, [1, 2, 3, "b"]), Gericht("Eis", 1, 120, ["c", "d"]) ]

print(sortbyName(speisekarte))

For reference, try `print(Greicht(...))`, where `...` is some valid input — Mad Physicist, Dec 15 '21 at 17:34
If you want a nice fancy string, look up how to implement `__str__` and/or `__repr__` — Mad Physicist, Dec 15 '21 at 17:35
beware that `alergene = []`! See https://stackoverflow.com/questions/1132941/least-astonishment-and-the-mutable-default-argument. The easy fix is to make the default `None` and then say `self.alergene = alergene or []` in the body of the `__init__`. — Samwise, Dec 15 '21 at 17:39

score 0 · Answer 1 · answered Dec 15 '21 at 17:38

0

Add something like:

    def __repr___(self) -> str:
        return "Some Gereicht object"

to your Gereicht class. Modify to taste until you get the output you want from your printed list.

answered Dec 15 '21 at 17:38

Samwise

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Strange message when sorting objects of a class

1 Answers1