python人民币和日元的转换

使用 Python 实现人民币和日元之间的货币转换，可以通过获取实时汇率并使用简单的函数来完成。下面是一个示例代码，展示了如何使用外部 API 获取实时汇率，并进行货币转换。

import requests

def get_exchange_rate(api_key, from_currency, to_currency):
    url = f"https://v6.exchangerate-api.com/v6/{api_key}/latest/{from_currency}"
    response = requests.get(url)
    data = response.json()
    if response.status_code != 200:
        raise Exception("API request failed. Please check your API key and try again.")
    exchange_rate = data['conversion_rates'][to_currency]
    return exchange_rate

def convert_currency(api_key, from_currency, to_currency, amount):
    rate = get_exchange_rate(api_key, from_currency, to_currency)
    converted_amount = amount * rate
    return converted_amount

api_key = "your_api_key_here"
from_currency = "CNY"
to_currency = "JPY"
amount = 100  # 100 CNY

converted_amount = convert_currency(api_key, from_currency, to_currency, amount)
print(f"{amount} {from_currency} 等于 {converted_amount:.2f} {to_currency}")