A very basic mock python server

server.py

# flask --app server run

from dataclasses import dataclass, asdict
from typing import Generic, List, TypeVar
from flask import Flask

app = Flask(__name__)

T = TypeVar("T")


@dataclass
class Workout:
    """A workout"""

    id: str
    title: str


@dataclass
class ListResponse(Generic[T]):
    """A typical list response"""

    data: List[T]
    request_id: int


requests = 0


@app.route("/workouts")
def workouts():
    global requests
    requests += 1
    res = ListResponse(
        data=[
            Workout(id="1", title="Fast Track To Fat Loss"),
            Workout(id="2", title="Beach Shredder 9000"),
            Workout(id="3", title="Tubular Triceps"),
        ],
        request_id=requests,
    )
    return asdict(res)