How to create inline objects with properties?

Question

In Javascript it would be:

var newObject = { \'propertyName\' : \'propertyValue\' };
newObject.propertyName;  // retur         


        

Answer 1

I don't know if there's a built-in way to do it, but you can always define a class like this:

class InlineClass(object):
    def __init__(self, dict):
        self.__dict__ = dict

obj = InlineClass({'propertyName' : 'propertyValue'})

Answer 2

SilentGhost had a good answer, but his code actually creates a new object of metaclass type, in other words it creates a class. And classes are objects in Python!

obj = type('obj', (object,), {'propertyName' : 'propertyValue'})
type(obj) 

gives

<class 'type'>

To create a new object of a custom or build-in class with dict attributes (aka properties) in one line I'd suggest to just call it:

new_object = type('Foo', (object,), {'name': 'new object'})()

and now

type(new_object) 

is

<class '__main__.Foo'>

which means it's an object of class Foo

I hope it helps those who are new to Python.

Answer 3

Peter's answer

obj = lambda: None
obj.propertyName = 'propertyValue'