Reputation: 35
I have been looking for an answer to this for a while but keep finding answers about stripping a specific string from a list.
Let's say this is my list of strings
stringList = ["cat\n","dog\n","bird\n","rat\n","snake\n"]
But all list items contain a new line character (\n)
How can I remove this from all the strings within the list?
Upvotes: 1
Views: 470
Reputation: 22472
You could also use map()
along with str.rstrip
:
>>> string_list = ['cat\n', 'dog\n', 'bird\n', 'rat\n', 'snake\n']
>>> new_string_list = list(map(str.rstrip, string_list))
>>> new_string_list
['cat', 'dog', 'bird', 'rat', 'snake']
Upvotes: 1
Reputation: 326
Since you can use an if to check if a new line character exists in a string, you can use the code below to detect string elements with the new line character and replace those characters with empty strings
stringList = ["cat\n","dog\n","bird\n","rat\n","snake\n"]
nlist = []
for string in stringList:
if "\n" in string:
nlist.append(string.replace("\n" , ""))
print(nlist)
Upvotes: 1
Reputation: 5033
By applying the method strip
(or rstrip
) to all terms of the list with map
out = list(map(str.strip, stringList))
print(out)
or with a more rudimental check and slice
strip_char = '\n'
out = [s[:-len(strip_char)] if s.endswith(strip_char) else s for s in stringList]
print(out)
Upvotes: 1
Reputation: 522817
Use a list comprehension with rstrip()
:
stringList = ["cat\n","dog\n","bird\n","rat\n","snake\n"]
output = [x.rstrip() for x in stringList]
print(output) # ['cat', 'dog', 'bird', 'rat', 'snake']
If you really want to target a single newline character only at the end of each string, then we can get more precise with re.sub
:
stringList = ["cat\n","dog\n","bird\n","rat\n","snake\n"]
output = [re.sub(r'\n$', '', x) for x in stringList]
print(output) # ['cat', 'dog', 'bird', 'rat', 'snake']
Upvotes: 1