regex - Python Regular Expression looking for two digits only

Question

If I had a sentence that has an age and a time :

import re
text = "I am 21 and work at 3:30"
answer= re.findall(r'd{2}', text)
print(answer)

The issue is that it gives me not only the 21, but 30 (since it looks for 2 digits). How do I avoid this so it will only count the numbers and not the non-alphanumeric characters that leads to the issue? I tried to use [0-99] instead of the {} braces but that didn't seem to help.

Answer 1

Using sd{2}s will give you only 2 digit combinations with spaces around them (before and after).

Or if you want to match without trailing whitespace: sd{2}