python / python/typing

advanced SimpleNamespace typing

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#688 9 comments 6 reactions 0 assignees View on GitHub

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topic: feature
Dominant language
Python
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Description

the same way we now have TypedDict, it would be nice to have typed SimpleNamespace with equivalent semantics, so that nested structures can be easily checked. eg

class MySubType(TypedSimpleNamespace):
   bar: int

class MyType(TypedSimpleNamespace):
   foo: MySubType

# correct
a: MyType = SimpleNamespace(foo=SimpleNamespace(bar=1))
# incorrect, `bar` should be a number
a: MyType = SimpleNamespace(foo=SimpleNamespace(bar='abc'))

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Research direction

The issue provides no repository file or test entry point; begin by comparing the requested nested TypedSimpleNamespace semantics with PEP 589 TypedDict. Clarify the type-checking behavior and scope for the shown valid and invalid examples before locating the implementation and tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
tooling
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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