base = 'USD'
codes = 'EUR,CAD,JPY'

url = (
    f'https://currencyrateapi.com/api/latest?codes={codes}'
    f'&base={base}'
)

response = requests.get(url)
data = response.json()

print(f"1 {base} is {data['rates']['EUR']} Euros")

const base = 'USD';
const codes = 'EUR,CAD,JPY';

const url = `https://currencyrateapi.com/api/latest?codes=${codes}` +
            `&base=${base}`;

(async () => {
  try {
    const res = await fetch(url);
    const data = await res.json();
    console.log(
      `1 ${base} is ${data.rates.EUR} Euros`
    );
  } catch (err) {
    console.error('Error:', err);
  }
})();

base = 'USD'
codes = 'EUR,CAD,JPY'

url = URI(
  "https://currencyrateapi.com/api/latest?codes=#{codes}" \
  "&base=#{base}"
)

response = Net::HTTP.get(url)
data = JSON.parse(response)

puts "1 #{base} is #{data['rates']['EUR']} Euros"

String base = "USD";
String codes = "EUR,CAD,JPY";
String url = "https://currencyrateapi.com/api/latest?codes=" +
             codes + "&base=" + base;

HttpClient client = HttpClient.newHttpClient();
HttpRequest request = HttpRequest.newBuilder()
    .uri(URI.create(url))
    .build();

HttpResponse<String> response =
    client.send(request, HttpResponse.BodyHandlers.ofString());

JSONObject data = new JSONObject(response.body());
System.out.println(
    "1 " + base + " is " +
    data.getJSONObject("rates").getDouble("EUR") + " Euros"
);

base := "USD"
codes := "EUR,CAD,JPY"
url := "https://currencyrateapi.com/api/latest?codes=" +
       codes + "&base=" + base

resp, err := http.Get(url)
if err != nil {
    panic(err)
}
defer resp.Body.Close()

var data struct {
    Rates map[string]float64 `json:"rates"`
}

if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
    panic(err)
}

fmt.Printf(
    "1 %s is %.6f Euros\n",
    base, data.Rates["EUR"],
)

string base = "USD";
string codes = "EUR,CAD,JPY";

string url =
    $"https://currencyrateapi.com/api/latest?codes={codes}" +
    $"&base={base}";

using HttpClient client = new HttpClient();
string response = await client.GetStringAsync(url);

using JsonDocument doc = JsonDocument.Parse(response);
double eur = doc.RootElement
                .GetProperty("rates")
                .GetProperty("EUR")
                .GetDouble();

Console.WriteLine($"1 {base} is {eur} Euros");