Trying to solve.
I have a string from a user input. And I want to reomove all special characters from a list = [',', '.', '"', '\'', ':',]
using the replace function I´m able to remove one by one. using somethin like:
string = "a,bhc:kalaej jff!"
string.replace(",", "")
but I want to do remove all the special chr. in one go. I have tried:
unwanted_specialchr = [',', '.', '"', '\'', ':',]
string = "a,bhc:kalaej jff!"
string.replace(unwanted_specialchr, "")
figured it out:
def remove_specialchr(string):
unwanted_specialchr = [',', '.', '"', '\'', ':',]
for chr in string:
if chr in unwanted_specialchr:
string = string.replace(chr, '')
return string
unwanted_specialchr to a set. Replace the square brackets with curly braces. It still may not be optimal, because you have to do O(len(unwanted_specialchar)) replace operations, which pass over the entire string.you can use re.sub:
import re
unwanted_specialchr = [',', '.', '"', '\'', ':',]
string = "a,bhc:kalaej jff!"
re.sub(f'[{"".join(unwanted_specialchr)}]', '', string)
output:
'abhckalaej jff!'
or you could use:
''.join(c for c in string if c not in unwanted_specialchr)
output:
'abhckalaej jff!'
Well i think that your solution could be better with the optimization:
def remove_specialchr(string):
specialChr = {',', '.', '"', '\'', ':'}
stringS = ''
for chr in string:
if chr not in specialChr:
stringS += it
return stringS
+=. Python strings are immutable.