Python货币转换

https://www.geeksforgeeks.org/currency-converter-in-python/

import requests
  
class Currency_convertor:
    # empty dict to store the conversion rates
    rates = {}
    def __init__(self, url):
        data = requests.get(url).json()
  
        # Extracting only the rates from the json data
        self.rates = data["rates"]
  
    # function to do a simple cross multiplication between
    # the amount and the conversion rates
    def convert(self, from_currency, to_currency, amount):
        initial_amount = amount
        if from_currency != 'EUR' :
            amount = amount / self.rates[from_currency]
  
        # limiting the precision to 2 decimal places
        amount = round(amount * self.rates[to_currency], 2)
        print('{} {} = {} {}'.format(initial_amount, from_currency, amount, to_currency))
  
# Driver code
if __name__ == "__main__":
  
    # YOUR_ACCESS_KEY = 'GET YOUR ACCESS KEY FROM fixer.io'
    url = str.__add__('http://data.fixer.io/api/latest?access_key=', YOUR_ACCESS_KEY)  
    c = Currency_convertor(url)
    from