Question

我被分配制作货币转换器，我不确定它为什么不起作用。这是该计划：

print(
    "Welcome to Joseph Pilotte's Currency Converter"
)

USD = input(
    "What amount of USD would you like to convert to another currency? Write only the number and click enter "
)

Currency = input(
    "Which currency would you like to convert USD from? (Options: The Canadian Dollar(CAD), The Swiss Franc(CHF), The Japanese Yen(JPY), or The British Pound(GBP) PLEASE ENTER 3 LETTER CURRENCY CODE IN UPPERCASE"
)

if Currency == "CAD":
    print(USD * 1.252910,
        " Canadian Dollars")

if Currency == "CHF":
    print(USD * 0.94122, " Swiss Franc")

if Currency == "JPY":
    print(USD * 109.29, " Japanese Yen")

if Currency == "GBP":
    print(USD * 0.71832,
        "British Pounds")

这个问题已经解决了我没有在输入之前将“USD”定义为int

Answer 1

我冒昧地用一些“改进”重新制作你的节目。

Textwrap.dedent很好地格式化文本
用于保存货币值的字典
确保获得有效输入的功能

下面：

from textwrap import dedent

curr_dict = {'CAD':1.252910,
             'CHF':0.94122,
             'JPY':0.71832,
             'GBP':109.29}

def float_input(text):
    while True:
        try:
            return float(input(text))
        except ValueError:
            print('Not a number! Insert correct value.')

def conversion_func(text):
    while True:
        currency = input(text)
        if currency in curr_dict:
            return curr_dict.get(currency)
        else:
            print('Not a valid currency. Try again.')

def main():
    '''
    Asks for amount to convert (USD) and desired currency
    Prints the result
    '''
    amount = float_input(dedent('''\
        Welcome to Joseph Pilotte's Currency Converter
        What amount of USD would you like to convert to another currency?
        Write only the number and click enter\n'''))

    conversion = conversion_func(dedent('''\n\
        Which currency would you like to convert USD from?
        (Options: The Canadian Dollar(CAD), The Swiss Franc(CHF), 
                  The Japanese Yen(JPY) or The British Pound(GBP)
        PLEASE ENTER 3 LETTER CURRENCY CODE IN UPPERCASE'''))

    print(amount*conversion)

main()

Python货币转换器不工作

1 个答案: