轉換爲字符串，刪除特殊字符和更換

Question

我需要我的字符串轉換，使其製作成特殊格式

例如：

string = "the cow's milk is a-okay!" 

converted string = "the-cows-milk-is-a-okay" 

Answer 1

import re 

s = "the cow's milk is a-okay!" 
s = re.sub(r'[^a-zA-Z\s-]+', '', s) # remove anything that isn't a letter, space, or hyphen 
s = re.sub(r'\s+', '-', s) # replace all spaces with hyphens 
print(s) # the-cows-milk-is-a-okay 

這裏一個「空間」是任何包含製表符和換行符的空白字符。要更改此設置，請將\s替換爲實際空格字符。

多個空格的運行將被替換爲一個連字符。要更改此設置，請在第二次撥打re.sub時刪除+。

Answer 2

這個怎麼樣（缺點是無法維持的連字符-），

import string 

s = "the cow's milk is a-okay!" 

table = string.maketrans(" ", "-") 
new_s = s.translate(table, string.punctuation) 

print(new_s) 
# the-cows-milk-is-aokay 

Answer 3

>>> string = "the cow's milk is a-okay!" 
>>> string 
"the cow's milk is a-okay!" 
>>> string = string.replace(' ','-') 
>>> for char in string: 
...  if char in "?.!:;/'": 
...    string = string.replace(char,'') 
... 
>>> string 
'the-cows-milk-is-a-okay' 

Answer 4

一個簡單的生成器表達式可以用來實現這一點：

>>> s = "the cow's milk is a-okay!" 
>>> ''.join(('-' if el == " " else el if el not in "?.!:;/'" else "" for el in s)) 
'the-cows-milk-is-a-okay' 
>>>