如何不刪除撇號文本文件中的某些單詞的撇號

Question

如何刪除撇號，雙引號，逗號等所有單詞，不包括像它是什麼，什麼是等字。句子中必須有句號和句號之間的空格。

例如

輸入句子：

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

所需的輸出句子：

This has punctuation and it's hard to remove . 

Answer 1

我提出這樣的代碼：

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

輸出：

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 . 

---

正則表達式：

["?,$!]  # 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

使用用於外部引號

像這樣string.strip（定界符）函數：

output = chaine.strip("\"") 

請注意，您必須使用'\'（如'，'，\，等等）來轉義某些字符。或者你可以輸入他們爲''「，'''（不確定）。

編輯：mmh，沒有考慮撇號，如果唯一的問題是撇號，你可以先解開它，然後手動解析它用for語句，找到找到的第一個撇號的指示符，然後如果後跟一個's'，就把它留下，我不知道，你必須在編碼之前設置詞彙/語義規則。

編輯2： 如果該字符串只是一個句子，總是在最後一個點，總是需要的空間，然後在最後使用：

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

Answer 3

使用負查找behin d

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

除去匹配'"?字符通過re.sub。

DEMO

而且你的代碼會是這樣，

>>> 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離開期間（只要它前面有一個空格）：

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

Answer 5

我想這是，刪除所有在任何一個單詞結尾的引文。因此從單詞分割句子字（由白色空間隔開）並去掉任何前導或尾隨引號

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