Python：使用正则表达式或逻辑从列表中删除一些字符串内容

Question

I have directory of text files, each line of the file is read as list element and stored in a list

list = ['abc','[','apple','banana','cucumber',']','efg','{','egg','[fff]','ginger }','end;','abc1','[','apple1','banana1','cucumber1',']','efg1','{','egg1','[fff1]','ginger1 }','end1;']

Now I want to only remove the content inside the stand alone square brackets from the files - looks like'[','apple','banana','cucumber',']' in my list ..rest to be kept untouched.. even the square bracket content inside curly brackets needs to be retained- looks like [fff] content in my list.

So i joined all the strings to apply regex operation -

newlist = newlist = [' '.join(list)]
print(newlist)

newlist looks like -

['abc [ apple banana cucumber ] efg { egg [fff] ginger } end; abc1 [ apple1 banana1 cucumber1 ] efg1 { egg1 [fff1] ginger1 } end1;']

Expected output using regex -

['abc  efg { egg [fff] ginger } end; abc1  efg1 { egg1 [fff1] ginger1 } end1;']

Pls pls help..

Answer 1

This regex will remove the unwanted data per your requirements

import re

list = ['abc','[','apple','banana','cucumber',']','efg','{','egg','[fff]','ginger }','end;','abc1','[','apple1','banana1','cucumber1',']','efg1','{','egg1','[fff1]','ginger1 }','end1;']
newlist = newlist = [' '.join(list)]
newlist = [re.sub('\[ .+? \]', '', newlist[0])]