Convert PDF bank statements to Excel securely

import requests, time

HEADERS = {"X-API-Key": "bsco_your_key"}
BASE = "https://api.bank-statements.co/api/v1"

# Upload and convert in 3 lines
resp = requests.post(f"{BASE}/upload",
    headers=HEADERS, files={"file": open("statement.pdf", "rb")})
filename = resp.json()["data"]["filename"]

requests.post(f"{BASE}/convert/{filename}",
    headers=HEADERS)

# Poll until done, then download
while True:
    s = requests.get(f"{BASE}/convert/{filename}/status",
        headers=HEADERS).json()
    if s["data"]["conversion_status"] == "completed":
        break
    time.sleep(3)

const BASE = "https://api.bank-statements.co/api/v1";
const headers = { "X-API-Key": "bsco_your_key" };

// Upload
const form = new FormData();
form.append("file", fileInput);
const { data } = await fetch(`${BASE}/upload`,
  { method: "POST", headers, body: form })
  .then(r => r.json());

// Convert
await fetch(`${BASE}/convert/${data.filename}`,
  { method: "POST", headers });

// Download CSV
const dl = await fetch(
  `${BASE}/download/${data.filename}?format=csv`,
  { headers }).then(r => r.json());