Ответ:

mport requests

class CurrencyConverter:

  def __init__(self):

      self.rates = {}

  def get_rates(self):

      response = requests.get("https://bank.gov.ua/NBUStatService/v1/statdirectory/exchange?json")

      data = response.json()

      for item in data:

          self.rates[item['cc']] = item['rate']

  def convert(self, amount, from_currency, to_currency):

      if from_currency != "USD":

          amount = amount / self.rates[from_currency]

      amount = round(amount * self.rates[to_currency], 2)

      return amount

converter = CurrencyConverter()

converter.get_rates()

while True:

  try:

      amount = float(input("Enter the amount of currency: "))

      from_currency = input("Enter the currency code of the amount you entered: ")

      to_currency = "USD"

      converted_amount = converter.convert(amount, from_currency.upper(), to_currency)

      print("The amount of {} {} is equal to {:.2f} USD".format(amount, from_currency.upper(), converted_amount))

      break

  except KeyError:

      print("Invalid currency code entered. Please try again.")

  except ValueError:

      print("Invalid amount entered. Please try again.")

Объяснение: