Repro

import asyncio from graphql import ( graphql, GraphQLSchema, GraphQLObjectType, GraphQLField, GraphQLNonNull, GraphQLString, ) async def resolve_foo(obj, info): return "foo!" def resolve_bar(obj, info): raise Exception('yikes') schema = GraphQLSchema( query=GraphQLObjectType( name="RootQueryType", fields={ "foo": GraphQLField(GraphQLNonNull(GraphQLString), resolve=resolve_foo), "bar": GraphQLField(GraphQLNonNull(GraphQLString), resolve=resolve_bar), }, ) ) result = asyncio.run(graphql(schema, "{ foo bar }")) print(result)

Prints

$ python3 test2.py ExecutionResult(data=None, errors=[GraphQLError('yikes', locations=[SourceLocation(line=1, column=7)], path=['bar'])]) sys:1: RuntimeWarning: coroutine 'ExecutionContext.execute_field.<locals>.await_result' was never awaited sys:1: RuntimeWarning: coroutine 'resolve_foo' was never awaited 

Version info

$ pip freeze | grep graphql-core graphql-core==3.2.6 

I'm guessing what could be happening here is that:

• non-nullable field error (bar) bubbles up and cancels execution for the rest of the type's fields
• ...but we already kicked off the foo async resolver function
• ...but by aborting, we don't ever unwrap the future / await the result for, hence the warning.

Which makes total sense -- and indeed if we do schema.execute("{ bar foo }") we don't see the warning printed -- because the async function never even gets kicked off.

I think maybe we need to be calling task.cancel() or .close() somewhere?

• https://docs.python.org/3/library/asyncio-task.html#asyncio.Task.cancel
• https://docs.python.org/3/reference/datamodel.html#coroutine.close

(originally misatttributed to strawberry strawberry-graphql/strawberry#3820)

Thanks!