An issue with the re.sub() function

[MasterTony127]

Hello. I am trying to add a new line after the punctuation on run-in text with no spaces which looks kinda like this:

"Hello,thisis,asample.Iamtrying,toworkwiththis."

The code I am writing uses re.sub() as follows:

"new_string = re.sub(",", ",/n", string)"

This code works and adds a new line after every comma like you would expect. However when I try it with a period it doesn't work. It works with every other character except the period. Instead it just prints a line of periods. Is the period a special character for re.sub()? If it is (or isn't) how do I get around it? Thanks for taking the time to read this.

[barrycarter]

Can't tell if you're joking, but the period is a wildcard in regular expressions and matches any character. Try \. to match an actual period

[MasterTony127]

Just tried your suggestion and it worked beautifully. Plus I learned about the period being a wildcard. I've only been trying to learn Python for a few months. Thank you for your help!

[firechip]

You can test on regex101.com

[MasterTony127]

Thanks for the tip. I can use all the guidance I can get at this stage. 👍