Classes in PYTHON vs JAVASCRIPT

Am studying the difference between those two languages and i was wondering why i can’t access the variables in javascript classes without initiating an instance but i can do that in python

here is an example of what am talking about:

PYTHON CLASS

    class Car: 
       all =[]
       def __init__(self, name):
          self.name = name

          Car.all.append(self)

       def get_car_name(self):
          return self.name
 
        
        
    bmw = Car("BMW")
    mercedez = Car("MERCEDEZ")

    print(Car.all)

Running this code returns a list of all cars (which are the instance that i have created)
[<main.Car object at 0x0000022D667664E0>, <main.Car object at 0x0000022D66766510>]

JAVASCRIPT Class

    class Car {
      all = [];
      constructor(name, miles) {
      this.name = name;
      this.miles = miles;

      this.all.push(this);
      }
     }

    let ford = new Car("ford", 324);
    let tesla = new Car("tesla", 3433);

    console.log(Car.all);

if i used this code the console.log will return
undefined

in javascript if i want to get the value of all i have to use an instance like this

console.log(ford.all);

this will return only the instance of ford that was created
[ Car { all: [Circular *1], name: 'ford', miles: 324 } ]

but otherwise in python this if i printed out an instance all it will return this

print(bmw.all)

[<__main__.Car object at 0x00000199CAF764E0>, <__main__.Car object at 0x00000199CAF76510>]

it returns the two instance that is created even if i called the all of one instance

>Solution :

You need to declare it static, otherwise it’s an instance property:

class Car {
  static all = [];
  constructor(name, miles) {
  this.name = name;
  this.miles = miles;

  Car.all.push(this);
  }
 }

let ford = new Car("ford", 324);
let tesla = new Car("tesla", 3433);

console.log(Car.all);

In Python variables declared outside methods are static (no static keyword is needed).