Class Attributes vs Instance Attributes

class_attr_shared_object.py

class FooBar:
    class_attr: str = "foo bar"

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


if __name__ == "__main__":
    foo = FooBar("foo")
    bar = FooBar("bar")

    # print the instance attribute of the object foo
    print(foo.instance_attr)

    # print the instance attribute of the object bar
    print(bar.instance_attr)

    # print the class attribute of the class FooBar as a property of the class itself
    print(FooBar.class_attr)

    # print the class attribute  of the class as a property of the objects foo,bar
    print(bar.class_attr)
    print(foo.class_attr)

    # try to print instance attribute as a class property
    print(FooBar.instance_attr)
    # AttributeError: type object 'FooBar' has no attribute 'instance_attr'