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traitlets.Set should support generic type annotations for type safety #927
Description
Problem
traitlets.Set currently lacks generic type support, making it impossible to specify the type of elements it contains for proper type checking.
Current Situation
from traitlets import Set
import traitlets
class MyClass(traitlets.HasTraits):
# This works but provides no type information
my_set = Set()
# This doesn't work - no generic support
# my_set: Set[str] = Set() # Type errorDesired Behavior
traitlets.Set should support generic type annotations similar to how Python's built-in collections work:
from traitlets import Set
import traitlets
class MyClass(traitlets.HasTraits):
# Should be possible for type safety
room_ids: Set[str] = Set()
numbers: Set[int] = Set(default_value={1, 2, 3})Reference
The Set class is implemented in traitlets/traitlets.py as a container trait.
Activity