filter list based on string pattern of hyphen separated values-CodePudding

I have a list of strings with varying formats. Some of them start with a hyphen separated date time followed by a string that's a mixture of 16 numbers of letters. I would like to filter for only the strings that match this format. I've provided input and out put examples below. I'm not a regex expert, could someone please suggest a slick way to do this with python?

Input:

example_list=['2022-05-05-16-59-25-5840ZQ37F231D95W',
'wereD/22fdas/',
'mnkljlj/124kljf/oaahreljah',
'2022-09-11-16-59-25-5840XY37F231D95Z']

output:

['2022-05-05-16-59-25-5840ZQ37F231D95W',
'2022-09-11-16-59-25-5840XY37F231D95Z']

update:

using the suggestion below with re.match and list comprehension worked fine, thanks!

import re

[x for x in example_list if re.match("^\d{4}(-\d\d){5}-[A-Z\d]{16}$",x)]

CodePudding user response：

Try this:

^\d{4}(-\d\d){5}-[A-Z\d]{16}$

See live demo.

Regex breakdown:

^ start of input
\d{4} 4 digits
(-\d\d){5} 5 lots of a dash then 2 digits
[A-Z\d]{16} 16 of a caps letter or a digit
$ end of input