python - 从字典中替换列表中的字符串

Question

我的代码有一些问题:

word_list = { "hello" : "1", "bye" : "2"}

sentence= ['hello you, hows things', 'hello, good thanks']

for key, value in word_list.iteritems():
   for i in sentence:
       i = i.replace(key, value)
print i

预期输出 = '1 你，最近怎么样'，'1，谢谢'

它目前不替换任何出现的hello。我想知道我的句子循环是否正确？在此之后打印 i 将准确打印出 sentence 中的内容。

Answer 1

我猜word_list(尝试将变量重命名为word_dict，我认为这样更合适)有很多项目，

for index, data in enumerate(sentence):
    for key, value in word_list.iteritems():
        if key in data:
            sentence[index]=data.replace(key, word_list[key])

来自 ipython 的工作示例

In [1]: word_list = { "hello" : "1", "bye" : "2"}

In [2]: sentence = ['hello you, hows things', 'hello, good thanks']

In [3]: for index, data in enumerate(sentence):
   ...:         for key, value in word_list.iteritems():
   ...:                 if key in data:
   ...:                         sentence[index]=data.replace(key, word_list[key])
   ...:             

In [4]: sentence
Out[4]: ['1 you, hows things', '1, good thanks']