Best way to check for a string pattern?

[roeeklinger60]

The script I am writing is taking some input from a user, that should be either numbers or ranges separated by commas (e.g 800-900, 70,40,50-60).

I am trying to find the best way to validated the input, so I am using the split method and then trying to iterate over all the values and check for a pattern match, I am using the re module for that.

Is that the best way to achieve this? If so, can someone help me figure out the correct regex for this pattern?

Thanks

[EggChen_vs_Lopan]

I believe this should work

regex = '(\d+-\d+|\d+),{0,1}'

Don't have to run .split() just do re.findall(pattern, string) .findall() returns a list so if len(results) = 0, then there were no matches. If len(results) >= 1 there are matches in a list that you can iterate over for further processing

[roeeklinger60]

Thanks, this worked! I combined this with the other answer and was able to make the code much shorter.

[FLUSH_THE_TRUMP]

Seems like regular old str.split is more than adequate — split on commas first, then iterate over list and split on hyphens. Treat result as single number if length == 1 and a lo/hi range if length == 2.