Improve annotation of jsonschema.validators.create #8608
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srittau
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I did a quick amend because I realized I missed one of the I still need to work out how to handle these type aliases and annotations in the EDIT: clarified my meaning a bit. |
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According to mypy_primer, this change has no effect on the checked open source code. 🤖🎉 |
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python/typeshed#8608 introduced annotations for `create` which are not fully reflected here. In order to reflect that state into `jsonschema`, a new module, `jsonschema._typing` is introduced. The purpose of `_typing` is to be a singular place for the library to define type aliases and any typing-related utilities which may be needed. This will let us use aliases like `_typing.JsonValue` in many locations where any valid JSON datatype is accepted. The definitions can be refined over time as necessary. Initial definitions in `_typing` are: - Schema (any JSON object) - JsonObject (any JSON object) - JsonValue (any JSON value, including objects or sequences) `Schema` is just another name for `JsonObject`. Perhaps it is not needed, but the name may help clarify things to a reader. It is not obvious at present whether or not it is a good or bad idea to notate it as such, but a similar Schema alias is defined in typeshed and seems to be working there to annotate things accurately. These types are using `Mapping` and `Sequence` rather than `dict` or `list`. The rationale is that `jsonschema`'s logic does not dictate that the objects used *must* be defined in stdlib types or subtypes thereof. For example, a `collections.UserDict` could be used and should be accepted by the library (`UserDict` wraps but does not inherit from `dict`.)
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python/typeshed#8608 introduced annotations for `create` which are not fully reflected here. In order to reflect that state into `jsonschema`, a new module, `jsonschema._typing` is introduced. The purpose of `_typing` is to be a singular place for the library to define type aliases and any typing-related utilities which may be needed. This will let us use aliases like `_typing.JsonValue` in many locations where any valid JSON datatype is accepted. The definitions can be refined over time as necessary. Initial definitions in `_typing` are: - Schema (any JSON object) - JsonObject (any JSON object) - JsonValue (any JSON value, including objects or sequences) `Schema` is just another name for `JsonObject`. Perhaps it is not needed, but the name may help clarify things to a reader. It is not obvious at present whether or not it is a good or bad idea to notate it as such, but a similar Schema alias is defined in typeshed and seems to be working there to annotate things accurately. These types are using `Mapping` and `Sequence` rather than `dict` or `list`. The rationale is that `jsonschema`'s logic does not dictate that the objects used *must* be defined in stdlib types or subtypes thereof. For example, a `collections.UserDict` could be used and should be accepted by the library (`UserDict` wraps but does not inherit from `dict`.)
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I'm trying to resume annotating this library this summer/fall, so I'm putting in a small change to start.