Shortest way of creating an object with arbitrary attributes in Python?

Question

Hey, I just started wondering about this as I came upon a code that expected an object with a certain set of attributes (but with no specification of what type this object shoul

Answer 1

type('', (), {})() will create an object that can have arbitrary attributes.

Example:

obj = type('', (), {})()
obj.hello = "hello"
obj.world = "world"
print obj.hello, obj.world #will print "hello world"

type() with three arguments creates a new type.

The first argument '' is the name of the new type. We don't care about the name, so we leave it empty.

The second argument () is a tuple of base types, here object (implicit).

The third argument is a dictionary of attributes of the new object - again we don't care to it's an empty dictionary {}

And in the end we instantiate a new instance of this new type with () at the end.