Question

我正在尝试扩展Codeacademy的Pig Latin转换器以实践基本的编程概念。

我相信我的逻辑几乎是正确的（我确信它不是那么简洁！）现在我试图输出用户在一行输入的转换后的Pig拉丁语句子。

如果我从for循环内部打印，则每次都会在新行上打印。如果我从外面打印它只打印第一个单词，因为它没有遍历所有单词。

你能告诉我哪里出错吗？

很多，非常感谢你的帮助。

pyg = 'ay'

print ("Welcome to Matt's Pig Latin Converter!")

def convert(original):
    while True:
        if len(original) > 0 and (original.isalpha() or " " in original):
            print "You entered \"%s\"." % original
            split_list = original.split()

            for word in split_list:
                first = word[0]
                new_sentence = word[1:] + first + pyg
                final_sentence = "".join(new_sentence)
                print final_sentence


            break

        else:
            print ("That's not a valid input. Please try again.")
            return convert(raw_input("Please enter a word: "))

convert(raw_input("Please enter a word: "))

Answer 1

尝试：

pyg = 'ay'

print ("Welcome to Matt's Pig Latin Converter!")

def convert(original):
    while True:
        if len(original) > 0 and (original.isalpha() or " " in original):
            final_sentence = ""
            print "You entered \"%s\"." % original
            split_list = original.split()
            for word in split_list:
            first = word[0]
            new_sentence = word[1:] + first + pyg
            final_sentence = final_sentence.append(new_sentence)
            print final_sentence



            break

        else:
            print ("That's not a valid input. Please try again.")
            return convert(raw_input("Please enter a word: "))

convert(raw_input("Please enter a word: "))

这是因为你每次都在for循环中重建final_sentence而不是添加它。

Answer 2

我不确定程序逻辑，但快速解决方案是将所有final_sentence附加到列表中，并在打印后使用Join打印列表。

pyg = 'ay'

print ("Welcome to Matt's Pig Latin Converter!")

def convert(original):
    to_print = []
    while True:
        if len(original) > 0 and (original.isalpha() or " " in original):
            print "You entered \"%s\"." % original
            split_list = original.split()

            for word in split_list:
                first = word[0]
                new_sentence = word[1:] + first + pyg
                final_sentence = "".join(new_sentence)
                to_print.append(final_sentence)

            print " ".join(to_print)
            break

        else:
            print ("That's not a valid input. Please try again.")
            return convert(raw_input("Please enter a word: "))

convert(raw_input("Please enter a word: "))

此代码可以满足您的需求吗？

Answer 3

您的问题在这里：

final = []
for word in split_list:
  new_word = word[1:] + word[0] + pyg
  final.append(new_word)

print ' '.join(final)

你正在为自己加入一个单词。您需要保存循环内的所有单词，然后在循环处理完所有内容后打印它们。

print ' '.join([word[1:]+word[0]+'ay' for word in split_list])

或者，只是为了好玩，这里是单行：

编辑： 此外，@ furas在评论中提出了一个很好的观点，使用无换行进行打印只需添加{{1}到打印语句的末尾：

for word in split_list:
  first = word[0]
  print word[1:] + first + pyg,

如何在一行上打印整个转换后的句子？

3 个答案: