Is the regex correct?

Question

Python

Information:
There is a certain site where I get data (video). The parsing function works fine if you provide a link in requests.get(url). But I want to use this function elsewhere in the future, so I need a regular expression so that I expect different values ​​from the user, and everything works without interruption.

Description:
There is this link: https://example.com/serial/season-2/episode-3.html and https://example.com/serial/episode-1.html .
That is, the fact is that the links are different, some links do not have the season-X part (instead of X, any number). And the problem with seasons and episodes is that they can reach 200, or 10, different.

url = r'^https://(example\.com)/\w+/(episode-\d+|season-\d+/episode-\d+).html$'

And of course, there is .html at the end of every link, and nothing else.

You can help format the regular expression and explain your change.

Answer 1

So ?
https://regex101.com/r/TXEFg5/1

Answer 2

Use the question mark quantifier to indicate that some part of the regular expression may or may not be present.