pythonregex 更改我想要的任何单词

发布于06月17日

感谢大家的帮助，我完成了这一步，但我有一些新问题，我希望有人能帮助我，我找到了以下you单词，并想用另一个单词替换它们，但此代码仅适用于第一个单词

import Re
text = 'Suddenly you said goodbye, even though I was passionately in love with you, I hope you stay lonely and live for a hundred years'
def replace(text,key,value,NumberL):
    matches = list(re.finditer(key,text,re.I))
    for i in NumberL:
        newT = matches[i-1]
        text = text[:newT.start(0)] + value + text[newT.end(0):]
    print(text)
replace(text,'you','Cleis',[2,3])

结果:你突然说了声再见，尽管我非常爱克莱斯，但我"希望"孤独地生活了一百年.

我编辑并突出显示了错误词.

有人能给我一个解决这个问题的办法吗？

推荐答案

您可以使用

import re

def repl(m, value, counter, NumberL):
    counter.i += 1
    if counter.i in NumberL:
        return value
    return m.group()

def replace(text,key,value,NumberL):
    counter = lambda x: None
    counter.i = 0
    return re.sub(rf"(?!\B\w){re.escape(key)}(?<!\w\B)", lambda m: repl(m, value, counter, NumberL), text)
    
text = 'Suddenly you said goodbye, even though I was passionately in love with you, I hope you stay lonely and live for a hundred years'
print(replace(text,'you','Cleis',[2,3]))

输出:

Suddenly you said goodbye, even though I was passionately in love with Cleis, I hope Cleis stay lonely and live for a hundred years

请参见Python demo.

Details:

counter = lambda x: None设置计数器对象，counter.i = 0将i属性设置为0
re.sub(rf"(?!\B\w){re.escape(key)}(?<!\w\B)", lambda m: repl(m, value, counter, NumberL), text)查找作为一个整词搜索的key的所有匹配项(考虑key中的任何特殊字符)，并将其替换为repl函数
在repl函数中，counter.i递增，如果找到的匹配在NumberL中，则进行替换，否则，将返回找到的匹配.