Python中的CurrencyConverter。错误'金额'未定义，为什么？ 。还有是写这个代码更短或更紧凑的方式？

  • Z时代
  • 2024-01-10
  • 分类：问答

from currency_converter import CurrencyConverter

我试图globalling达修复我的错误，但它并没有帮助货币的的Python中的CurrencyConverter。错误'金额'未定义，为什么？ 。还有是写这个代码更短或更紧凑的方式？

global amounts 
c = CurrencyConverter() 
currency = input('What ?') 
currency = currency.split()

名单以供选择，字典

currencys = {"pounds":"GBP" , "dollars":"USD" , "euros":"EUR"} 
WCurrency = ' '

这是它承认句话是什么

if 'what' in currency: 
    next_word = currency[currency.index('what') + 1] 
    if next_word == 'is':

长的if语句我想是笑rtened如果可能的话

 if 'pounds' in currency: 
       amounts = currency[currency.index('pounds') - 1] 
       WCurrency = currencys['pounds'] 
     if 'euros' in currency: 
       amounts = currency[currency.index('euros') - 1] 
       WCurrency = currencys['euros'] 
     if 'dollars' in currency: 
       amounts = currency[currency.index('dollars') - 1] 
       WCurrency = currencys['dollars'] 
     if 'in' in currency: 
       next_word = currency[currency.index('in') + 1] 
     if next_word == 'dollars': 
       W2Currency = currencys['dollars'] 
     if next_word == 'pounds': 
       W2Currency = currencys['pounds'] 
     if next_word == 'euros': 
       W2Currency = currencys['euros']

这可以让你输入的句子以不同的格式

if 'how' in currency: 
    next_word = currency[currency.index('how') + 1] 
    if next_word == 'many':

长，如果可能的话

 if 'pounds' in currency: 
      W2Currency = currencys['pounds'] 
     if 'euros' in currency: 
      W2Currency = currencys['euros'] 
     if 'dollars' in currency: 
      W2Currency = currencys['dollars'] 
     if 'is' in currency: 
      next_word = currency[currency.index('is') + 1] 
     if next_word == 'dollars': 
      amounts = currency[currency.index('dollars') - 1] 
      WCurrency = currencys['dollars'] 
     if next_word == 'pounds': 
      amounts = currency[currency.index('pounds') - 1] 
      WCurrency = currencys['pounds'] 
     if next_word == 'euros': 
      amounts = currency[currency.index('euros') - 1] 
      WCurrency = currencys['euros'] 
def convertCurrency(amount, currency, targertCurrency): 
    try: 
     return c.convert(amount , currency , targertCurrency) 
    except: 
     print('Invalid currency or amounts!') 
print(convertCurrency(amounts, str(WCurrency), str(W2Currency)))

回答：

使用elif这样可以防止美元，缩短陈述我想从再次被认可。这也是很好的做法。即

if 'pounds' in currency: 
      amounts = currency[currency.index('pounds') - 1] 
      WCurrency = currencys['pounds'] 
    elif 'euros' in currency: 
      amounts = currency[currency.index('euros') - 1] 
      WCurrency = currencys['euros'] 
    elif 'dollars' in currency: 
      amounts = currency[currency.index('dollars') - 1] 
      WCurrency = currencys['dollars'] 
    elif 'in' in currency: 
      next_word = currency[currency.index('in') + 1] 
    elif next_word == 'dollars': 
      W2Currency = currencys['dollars'] 
    elif next_word == 'pounds': 
      W2Currency = currencys['pounds'] 
    elif next_word == 'euros': 
      W2Currency = currencys['euros']

这意味着，如果dollars和pounds处于森泰斯它将识别的第一个。唉这个代码非常混乱，我会建议使用for循环。即

for word in sentance: 
    if word is in [list, of, currencies] and isdigit(sentance(word.index() - 1)): 
     currency = word

等等...

以上是 Python中的CurrencyConverter。错误'金额'未定义，为什么？ 。还有是写这个代码更短或更紧凑的方式？ 的全部内容， 来源链接： utcz.com/qa/258557.html

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