[WIP] mark some types as non-hashable #2221
Closed
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes #2148.
I went over the builtins manually and grepped for other classes in the standard library that declare
__hash__ = None
.Some interesting things I learned:
slice
is not hashable, even though it is immutable.decimal.Context
is hashable but_pydecimal.Context
is not. We don't have a stub for_pydecimal
, so I made no changes in typeshed.