Check my answer at https://stackoverflow.com/a/58067032/6615163
>>> class TEST:
... def __init__(self, project = 'ABC', scenarios = {'A': [1,2,3], 'B': [4,5,6]}):
... self.project = project
... for feature in scenarios:
... scenario = scenarios[feature]
... setattr(self, feature, scenario)
...
>>>
>>> P = TEST(project = 'ABC', scenarios = {'A': [1,2,3], 'B': [4,5,6], 'C': [7,8,9]})
>>>
>>> P.A
[1, 2, 3]
>>>
>>> P.B
[4, 5, 6]
>>>
>>> P.C
[7, 8, 9]
>>> >>> class A:
... pass
...
>>> a = A()
>>> setattr(a, "prop1", 10)
>>>
>>> a.prop1
10
>>>
>>> setattr(a, "increment", lambda x: x + 1)
>>>
>>> a.increment(110)
111
>>> Help on built-in function setattr in module builtins:
setattr(obj, name, value, /) Sets the named attribute on the given object to the specified value.
setattr(x, 'y', v) is equivalent to ``x.y = v''