如何去除Python中的标点符号而不留空格

Question

I want to remove certain punctuations from a text. I was able to remove my desired characters but it keep leaving a space instead of the character.

In { ) other news tonight,
a Constitutional { | / !! amendment

I have a text such as above and when I process it it becomes

In   other news tonight,
a Constitutional    !! amendment

Instead of

In other news tonight,
a Constitutional !! amendment

Below is the code I have

for line in lines:
    exclude = set('"#$%&\()*+-/:<=>@[\\]^_`{|}')
    line = ''.join(ch for ch in line if ch not in exclude)

How do I remove empty spaces that are being produced?

Answer 1

No empty spaces are being created. Your string already has empty spaces between these characters. Removing those characters will not remove the spaces in between them. One potential solution is that I assume you want to remove any areas with more than one consecutive space. Replace your code with:

exclude = set('"#$%&\()*+-/:<=>@[\\]^_`{|}')
for line in lines:
    line = ''.join(ch for ch in line if ch not in exclude)
    line = ' '.join(line.split())

Which will remove all double spaces.

Answer 2

You can split the string with the str.split method so that multiple spaces are treated as one, and then join the resulting list back into a string by a space:

exclude = set('"#$%&\()*+-/:<=>@[\\]^_`{|}')
for line in lines:
    line = ' '.join(''.join(' ' if ch in exclude else ch for ch in line).split())

Answer 3

I want to remove certain punctuations from a text. I was able to remove my desired characters but it keep leaving a space instead of the character.

In { ) other news tonight,
a Constitutional { | / !! amendment

I have a text such as above and when I process it it becomes

In   other news tonight,
a Constitutional    !! amendment

Instead of

In other news tonight,
a Constitutional !! amendment

Below is the code I have

for line in lines:
    exclude = set('"#$%&\()*+-/:<=>@[\\]^_`{|}')
    line = ''.join(ch for ch in line if ch not in exclude)

How do I remove empty spaces that are being produced?