用相同单词的大小写搜索和替换单词

Question

此脚本的重点是替换多个单词字符串，无论单词以小写字母还是大写字母开头。

代码示例：

import re
from re import sub

def word_replace(text, replace_dict):
    rc = re.compile(r"[A-Za-z_]\w*")
def translate(match):
    word = match.group(0) 
    return replace_dict.get(word, word)
return rc.sub(translate, text)

old_text = """Bob: say why don't you play ball
jeff: i have no idea
bob: well maybe you should """

replace_dict = {
"Bob" : 'bob baller',
"debug" : "fix",
'ship': 'boat'
 }

我得到的是：

bob baller: say why don't you play ball
jeff: i have no idea
bob: well maybe you should 

我想从文本中得到“Bob”和“bob”，然后将它们都替换为 bob Baller。

为了进一步澄清这个问题，我要做的是替换单词“bob”（或replace_dict中的任何单词），如果它是大写或小写的。

Answer 1

用像这样的附加参数编译你的正则表达式

re.compile("你的正则表达式放在这里", re.IGNORECASE)

编辑 1：

好的，事实证明，由于双引号和单引号的使用不一致，您的 replace_dict 格式不正确。 这是工作代码和预期输出：

bob_baller.py

import re

def word_replace(text, replace_dict):
    rc = re.compile(r"[A-Za-z_]\w*")

    def translate(match):
        word = match.group(0).lower()
        print(word)
        return replace_dict.get(word, word)

    return rc.sub(translate, text)

old_text = """Bob: say why don't you play ball
jeff: i have no idea
bob: well maybe you should """

replace_dict = {
    "bob" : "bob baller",    # Everything is double quoted
    "debug" : "fix",
    "ship": "boat"
 }

output = word_replace(old_text, replace_dict)
print(output)

$ python bob_baller.py
bob baller: say why don't you play ball
jeff: i have no idea
bob baller: well maybe you should 

Answer 2

您可以将 replace_dict 键转换为小写，然后匹配两个单词并替换。就像鲍勃和鲍勃的比赛一样。