Запросите сервисы, страны и цены SMS из Python

# Python 3.10+; standard library only. No API key is needed.
import argparse
import json
from decimal import Decimal
from urllib.error import HTTPError, URLError
from urllib.parse import urlencode
from urllib.request import Request, urlopen

BASE_URL = "https://raysms.com"

def get_items(path, **params):
    query = urlencode({k: v for k, v in params.items() if v is not None})
    url = BASE_URL + "/api/" + path + ("?" + query if query else "")
    request = Request(url, headers={"Accept": "application/json",
                                    "User-Agent": "RaySMS-Catalog-Example/1.0"},
                      method="GET")
    try:
        with urlopen(request, timeout=15) as response:
            result = json.load(response)
    except HTTPError as error:
        if error.code == 429:
            delay = error.headers.get("Retry-After", "the documented interval")
            raise SystemExit("Rate limited; retry later after " + delay)
        raise SystemExit("API returned HTTP " + str(error.code)
                         + "; check the request and service availability")
    except (URLError, TimeoutError):
        raise SystemExit("Network request failed; check connectivity and retry later")
    except (ValueError, UnicodeError):
        raise SystemExit("API response was not valid JSON")
    if not isinstance(result, dict) or not isinstance(result.get("items"), list):
        raise SystemExit("Unexpected API response; inspect the API documentation")
    return result["items"]

def main():
    parser = argparse.ArgumentParser(description="Read the RaySMS catalog; never buy numbers")
    parser.add_argument("--service", help="Service code from the catalog, for example tg")
    parser.add_argument("--country", help="Optional country ID from the catalog")
    args = parser.parse_args()
    services = get_items("catalog/services", lang="en")
    countries = get_items("catalog/countries", lang="en")
    names = {str(country["id"]): country["name"] for country in countries}
    if not args.service:
        print("Services (first 20):")
        for service in services[:20]:
            print(service["code"], service["name"])
        print("Countries (first 10):")
        for country in countries[:10]:
            print(country["id"], country["name"])
        return
    if args.service not in {service["code"] for service in services}:
        parser.error("Unknown service code; run without arguments to inspect the catalog")
    if args.country is not None and args.country not in names:
        parser.error("Unknown country ID; inspect the country catalog")
    offers = get_items("catalog/prices", service=args.service, country=args.country)
    if not offers:
        print("No available offers for this selection. No purchase was made.")
        return
    for offer in sorted(offers, key=lambda row: int(row["price_micros"]))[:10]:
        price = Decimal(str(offer["price_micros"])) / Decimal("1000000")
        country = str(offer["country"])
        print(country, names.get(country, country),
              "USD " + format(price, ".6f"), "available:", offer["count"])

if __name__ == "__main__":
    main()