How to get errors on Literal with typechecked annotated class?

[SamuelMarks]

from typing import Literal
from dataclasses import dataclass

from typeguard import typechecked


@dataclass
@typechecked
class A(object):
    optimizer: Literal[
        "Adadelta", "Adagrad", "Adam", "Adamax", "Ftrl", "Nadam", "RMSprop"
    ] = None

print(A(optimizer='Foo'), A(optimizer=None), A(optimizer=True), A(optimizer=5))

Output:

(A(optimizer='Foo'),
 A(optimizer=None),
 A(optimizer=True),
 A(optimizer=5),
 A(optimizer=0.2))

Expectation:
Error on all of these. This should work though A(optimizer='Adagrad')…

[SamuelMarks]

@agronholm In the meantime, I've started maintaining the old enforce repo, and added Literal support with: SamuelMarks/enforce@349e6f8

[svermeulen]

I don't think @typechecked can be applied to dataclass types as discussed in #161 and #61

[SamuelMarks]

@svermeulen Might give your gist a shot https://gist.github.com/svermeulen/8a6ad727113a6d07f78332152c1d33b2

I suppose avoiding maintaining my own runtime type checker is a good idea…

[agronholm]

As stated above, covered by #161 so I'm closing this one.