Python编写一个程序可以接受人民币或英镑收入转化为英镑或人民币输出。

在Python中，你可以创建一个货币转换函数，使用实时汇率API来获取转换率。这里假设你使用了`forex-python`库来进行汇率查询。以下是一个简单的示例：

from forex_python.converter import CurrencyRates

# 创建汇率实例
currencies = CurrencyRates()

def convert_currency(amount, from_currency, to_currency):
    # 检查输入货币是否有效
    if from_currency not in ("CNY", "GBP") or to_currency not in ("CNY", "GBP"):
        raise ValueError("无效的货币类型")
    
    # 获取当前汇率
    current_rate = currencies.get_rate(from_currency, to_currency)
    
    if current_rate is None:
        print(f"无法找到{from_currency}到{to_currency}的实时汇率")
        return
    
    converted_amount = amount * current_rate
    return converted_amount

# 测试转换
try:
    amount = float(input("请输入金额: "))
    from_currency = input("请输入原始货币（CNY或GBP）: ")
    to_currency = input("请输入目标货币（CNY或GBP）: ")
    
    converted_amount = convert_currency(amount, from_currency, to_currency)
    print(f"{amount} {from_currency} 转换成 {to_currency} 是: {converted_amount}")
except ValueError as e:
    print(e)