Python static variable of current instance

Question

I would like to have an instance of a class statically available. An example below:

class Car:

    ford = Car(brand='Ford')
    mercedes = Car(brand='Mercedes')
    bmw = Car(brand='BMW')

    def __init__(self, brand: str):
        self.brand = brand

This would allow me to do Car.ford for instance. However, it says the class Car doesn't exist. Is this possible in Python?

I have seen other posts explaining how static variables relate to classes and instances, but I was unable to find a post about a static variable of an instance of that same class. So the following example is not what I mean:

class Car:

    wheels = 4

    def __init__(self, brand: str):
        self.brand = brand


Car.wheels      # Will give me 4

trike = Car(brand='Trike')
trike.wheels    # Will give me 4
trike.wheels = 3
trike.wheels    # Will give me 3

Car.wheels      # Still gives me 4

I'm talking very specific about a static variable of an instance of that class.

Does this answer your question? Are static class variables possible in Python? — APhillips
– APhillips, Commented Jan 7, 2020 at 16:02
No, sorry. I saw that post, but it doesn't talk about a static variable of an instance of the class itself. I tried to be as specific as possible, but the question might be vague, not sure — Bram
– Bram, Commented Jan 7, 2020 at 16:04

Mickael B. · Accepted Answer · 2020-01-07 16:05:08Z

2

You can do it this way

class Car:
    def __init__(self, brand: str):
        self.brand = brand

Car.ford = Car(brand='Ford')
Car.mercedes = Car(brand='Mercedes')
Car.bmw = Car(brand='BMW')

answered Jan 7, 2020 at 16:05

Mickael B.

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1 Comment

Bram Over a year ago

Excellent! Seems a bit weird, but answers my question!

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