如何从多个类别中搜索和替换python中的字符串中的关键字？

Question

假设我有一个字符串，内容为：

'''
Looking closely we find Pepsi and Coca-cola have been the two two biggest brands of soda in the world for the past four years.
'''

我想将单词映射到其类表示为：

classes={"NAME":["pepsi","coca-cola", "james","jill"...],"CATEGORY":["soda","food","automobile"....],"NUMBER":["one","two","three","four"....]}

因此，最后我想将原始字符串设为：

Looking closely we find NAME and NAME have been the two biggest brands of CATEGORY in the world for the past NUMBER years

对于像这样的简单字典：

rep = {"NAME": "pepsi", "CATEGORY": "soda"....}

我可以用上面的dict替换单词，但是如果每个键有多个单词，该怎么办？

这是我到目前为止的内容：

stringh=sentence.lower()

for i,j in rep.items():
    stringh = stringh.replace(j, i)

print stringh

Answer 1

遍历列表

stringh=sentence.lower()

for i,j in rep.items():
    for k in j:
        stringh = stringh.replace(k, i)

print stringh