python remove text in brackets code example

Example 1: how to remove text in brackets of python

>>> import re 
>>> x = "This is a sentence. (once a day) [twice a day]"
>>> re.sub("[\(\[].*?[\)\]]", "", x)
'This is a sentence.  '

Example 2: how to remove brackets from list in python text file

res = str(test_list)[1:-1]