Requests and lifecycle

import random
import time

import requests

FINAL = {"completed", "failed", "cancelled"}
headers = {"Authorization": f"Bearer {api_key}"}
delay = 2.0

while True:
    response = requests.get(status_url, headers=headers, timeout=30)
    response.raise_for_status()  # a 401 or 404 will not change; a 5xx may be retried
    request = response.json()
    if request["status"] in FINAL:
        break
    time.sleep(delay + random.uniform(0, 0.5))
    delay = min(delay * 1.5, 15.0)

const FINAL = new Set(['completed', 'failed', 'cancelled']);
let delay = 2000;
let request;

for (;;) {
  const response = await fetch(statusUrl, {
    headers: { Authorization: `Bearer ${apiKey}` },
  });
  if (!response.ok) {
    throw new Error(`status read failed with ${response.status}`);
  }
  request = await response.json();
  if (FINAL.has(request.status)) break;
  await new Promise((resolve) =>
    setTimeout(resolve, delay + Math.random() * 500)
  );
  delay = Math.min(delay * 1.5, 15000);
}