如何不删除撇号文本文件中的某些单词的撇号

Question

如何删除撇号，双引号，逗号等所有单词，不包括像它是什么，什么是等字。句子中必须有句号和句号之间的空格。

例如

输入句子：

"'This has punctuation, and it's hard to remove. ?"  

所需的输出句子：

This has punctuation and it's hard to remove . 

Answer 1

我提出这样的代码：

import re 

sentences = [""""'This has punctuation, and it's hard to remove. ?" """, 
      "Did you see Cress' haircut?.", 
      "This 'thing' hasn't a really bad habit, you know?.", 
      "'I bought this for $30 from Best Buy it's. What a waste of money! The ear gels are 'comfortable at first, but what's after an hour."] 

for s in sentences: 
    # Remove the specified characters 
    new_s = re.sub(r"""["?,$!]|'(?!(?<! ')[ts])""", "", s) 

    # Deal with the final dot 
    new_s = re.sub(r"\.", " .", new_s) 
    print(new_s) 

ideone demo

输出：

This has punctuation and it's hard to remove . 
Did you see Cress haircut . 
This thing hasn't a really bad habit you know . 
I bought this for 30 from Best Buy it's . What a waste of money The ear gels are comfortable at first but what's after an hour . 

---

正则表达式：

["?,$!]  # Match " ? , $ or ! 
|   # OR 
'   # A ' if it does not have... 
(?!   
    (?<! ') 
    [ts]  # t or s after it, provided it has no ` '` before the t or s 
) 

Answer 2

使用用于外部引号

像这样string.strip（定界符）函数：

output = chaine.strip("\"") 

请注意，您必须使用'\'（如'，'，\，等等）来转义某些字符。或者你可以输入他们为''“，'''（不确定）。

编辑：mmh，没有考虑撇号，如果唯一的问题是撇号，你可以先解开它，然后手动解析它用for语句，找到找到的第一个撇号的指示符，然后如果后跟一个's'，就把它留下，我不知道，你必须在编码之前设置词汇/语义规则。

编辑2： 如果该字符串只是一个句子，总是在最后一个点，总是需要的空间，然后在最后使用：

chaine[:-2]+" "+chaine[-2:] 

Answer 3

使用负查找behin d

(?<!\w)["'?]|,(?=) 

除去匹配'"?字符通过re.sub。

DEMO

而且你的代码会是这样，

>>> s = '\"\'This has punctuation, and it\'s hard to remove. ?\" ' 
>>> m = re.sub(r'(?<!\w)[\"\'\?]|,(?=)', r'', s) 
>>> m 
"This has punctuation and it's hard to remove. " 

Answer 4

使用此：

(?<![tT](?=.[sS]))["'?:;,.] 

如果你也想在一行的末尾离开期间（只要它前面有一个空格）：

(?<![tT](?=.[sS]))(?<! (?=.$))["'?:;,.] 

Answer 5

我想这是，删除所有在任何一个单词结尾的引文。因此从单词分割句子字（由白色空间隔开）并去掉任何前导或尾随引号

>>> ''.join(e.strip(string.punctuation) for e in re.split("(\s)",st)) 
"This has punctuation and it's hard to remove "