I have the following string and I need to extract all Danger level values.

s = “Title: Welcome message. Header: . Subheader: Multimedia system.
Description: . Danger level: Title: Goodbye message. Header: .
Subheader: Cover. Description: . Danger level: L1”

The expected result is:

['','L1']

This is my current code:

import re
result = re.search('Danger level:(.*)', s)
result.group(1)

It works only if Danger level is mentioned once in the string s.
How can I update this code to get the expected result?