The sanic python http server provides a context object for global state. A nice newer feature of python is type checking, which can detect misspelled attributes. Is there a way of telling a type system like mypy what attributes, and their types you want to add to context object?
Because the object is a SimpleNamespace, there is no OOTB way to handle this. But, you have a few alternatives.
First, you can use Sanic Extensions to inject an object that is typed.
foo = Foo()
app.ext.dependency(foo)
@app.get("/getfoo")
async def getfoo(request: Request, foo: Foo):
return text(foo.bar())
Second, you could create a custom object that is typed and pass that to Sanic.
class CustomContext:
foo: int
app = Sanic(..., ctx= CustomContext())
ctx: CustomContext = app.ctx
Third, you could subclass the Sanic class and provide a typed object.