Search the numbers (0-9) of length between 1 to 3

re.finditer(r”([0-9]{1,3})”

Search the numbers (0-9) of length between 1 to 3 in a given string.
String:
“Exercises number 1, 12, 13, and 345 are important”
import re

results = re.finditer(r"([0-9]{1,3})",
          "Exercises number 1, 12, 13, and 345 are important")

print("Number of length 1 to 3")
for n in results:
    print(n.group(0))

Output:

Number of length 1 to 3
1
12
13
345