loop and call keys on class not subscriptable

Asked Feb 14 '22 at 20:00

Active Feb 14 '22 at 20:13

Viewed 13 times

I have a DataSet class which is a @dataclass and is defined here.

@dataclass
class DataSet:
    teams: list[Team]
    services: list[Service]
    functionalities: list[Functionality]

I want to be able to iterate over all the attributes in this DataSet class. Team, Service and Functionality are @Dataclass as well. For example, i've written some pseudocode here.

dataset_keys = ['services', 'teams', 'functionalities']
for key in dataset_keys:
    for i in src[key] <-- 'DataSet' object is not subscriptable

The only methods available on this object are the following. Found by running dir(src)

['__annotations__', '__class__', '__dataclass_fields__', '__dataclass_params__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__le__', '__lt__', '__module__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'functionalities', 'services', 'teams']

How can I achieve my goal by being able to iterate over this set of keys?

edited Feb 14 '22 at 20:13

petezurich

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asked Feb 14 '22 at 20:00

Trenton

Does `getattr` help? `getattr(src, key)` (assuming `src` is a `DataSet` instance) – aaossa Feb 14 '22 at 20:02
1

@aaossa Arguments are in the other order – Barmar Feb 14 '22 at 20:02
Right, thanks @Barmar – aaossa Feb 14 '22 at 20:03
@Mark Why not? It shows how to access attributes dynamically using `getattr()` – Barmar Feb 14 '22 at 20:12

loop and call keys on class not subscriptable

0 Answers0