main.py

from typing import List
import strawberry
from strawberry.asgi import GraphQL
from pydantic import BaseModel
from fastapi import FastAPI
import uvicorn
from pprint import pprint


# Pydantic types
class Person(BaseModel):
    id: int
    first_name: str
    last_name: str


# Strawberry schema mapping
@strawberry.experimental.pydantic.type(model=Person, fields=[
    'id',
    'first_name',
    'last_name'
])
class PersonType:
    pass


# Data set
def get_person():
    return [
        Person(
            id=42,
            first_name = 'Bill',
            last_name = 'Smith'
        )
    ]


# Define Query
@strawberry.type
class Query:
    people: List[Person] = strawberry.field(resolver=get_person)


# Instantiate schema
schema = strawberry.Schema(query=Query)


# Create REST api
fastapi_app = FastAPI()


# Default route
@fastapi_app.get("/")
def root_route():
    return {'GraphQLRoute': 'localhost:8000/graphql/'}


# create graphql (strawberry flavor -- see what I did there?) app
gql_qpp = GraphQL(schema)


# pass GraphQL app to it's dedicated route
fastapi_app.add_route('/graphql/', gql_qpp)

def print_hi(name):
    # Use a breakpoint in the code line below to debug your script.
    print(f'Hi, {name}')  # Press ⌘F8 to toggle the breakpoint.


if __name__ == '__main__':

    uvicorn.run(fastapi_app, host="localhost", port=8000)

# See PyCharm help at https://www.jetbrains.com/help/pycharm/

when I try to run, I get the error:

TypeError: Query fields cannot be resolved. Unexpected type '<class 'main.Person'>'