Match string started with a specific number

re.compile(r”^5”)

Write a python program where a string will start with a specific number.
import re

def match_num(S):

    text = re.compile(r"^5")

    if text.match(S):
        return True
    else:
        return False

# test
print(match_num('5-2345861'))    # True
print(match_num('6-2345861'))    # False