汇率自定义换算器

当然，我可以帮你创建一个简单的汇率自定义换算器的示例。以下是一个使用Python编写的汇率换算器的代码，它允许用户输入源货币、目标货币和金额来进行换算。

```python

class CurrencyConverter:

def __init__(self, exchange_rates):

self.exchange_rates = exchange_rates

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

if from_currency == to_currency:

return amount

if from_currency in self.exchange_rates and to_currency in self.exchange_rates:

return amount (self.exchange_rates[to_currency] / self.exchange_rates[from_currency])

else:

return "Exchange rate not available."

示例汇率数据

exchange_rates_example = {

'USD': 1.0,

'EUR': 0.9,

'JPY': 110.0,

'GBP': 0.8