转换字符串，删除特殊字符并替换

Question

I need to convert my string so that it is made into a special format

ex:

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

Here a 'space' is any whitespace character including tabs and newlines. To change this, replace \\s with the actual space character .

Runs of multiple spaces will be replaced by a single hyphen. To change this, remove the + in the second call to re.sub .

Answer 2

How about this (the drawback is unable to remain the hyphen - ),

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

A simple generator expression could be used to accomplish this:

>>> 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'
>>>