Python - Concatenate data attributes of a class

Question

I have a class

class Phone:
    def __init__(self, brand, name):
        self.brand = brand
        self.name = name

phone = Phone("apple", "iphone3")

So I want to concatenate both data attributes to result like

"apple; iphone3"

I would like to avoid

phoneData = phone.brand + ";" + phone.name

Any ideas?

Thanks in advance

Any reason why you want to avoid phoneData = phone.brand + ";" + phone.name ? — Maurice Meyer
– Maurice Meyer, Commented Nov 28, 2024 at 11:19
In a future, phone class is getting more attributes and I would like to avoid fixing each time. — fqv572
– fqv572, Commented Nov 28, 2024 at 11:32

Yevhen Kuzmovych · Accepted Answer · 2024-11-28 11:24:46Z

1

No way to avoid it. But you can override __str__ and/or __repr__ method of Phone:

class Phone:
    def __init__(self, brand, name):
         self.brand = brand
         self.name = name
    
    def __str__(self):
        return f'{self.brand};{self.name}'


phone = Phone("apple", "iphone3")

print(phone)

output:

apple;iphone3

And a bit of a hack that also can be used (but I wouldn't recommend it, it's more for educational purposes):

phone_data = ';'.join(phone.__dict__.values())

with the same output.

edited Nov 28, 2024 at 11:24

answered Nov 28, 2024 at 11:18

Yevhen Kuzmovych

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1 Comment

fqv572 Over a year ago

Thanks very much. Just a question. Does your version upgrade the code? Or is it only a matter of preference?

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