用python写一个汇率计算器

好的，以下是一个简单的汇率计算器的 Python 代码：

import requests

def exchange_rate(from_currency, to_currency, amount):
    url = f"https://api.exchangerate-api.com/v4/latest/{from_currency}"
    response = requests.get(url)
    data = response.json()
    exchange_rate = data["rates"][to_currency]
    converted_amount = amount * exchange_rate
    return converted_amount

from_currency = input("请输入原始货币代码：")
to_currency = input("请输入目标货币代码：")
amount = float(input("请输入要兑换的金额："))

result = exchange_rate(from_currency, to_currency, amount)
print(f"{amount} {from_currency} = {result} {to_currency}")

这个程序使用了 exchangerate-api.com 的 API 来获取汇率信息，然后根据用户输入的原始货币代码、目标货币代码和金额来计算兑换后的金额。