Human: What is a good Python function for comparing lengths of two strings. Assistant: 
Here is a Python function for comparing lengths of two strings

import re

def compare_lengths(s1, s2):
    """
    Compare lengths of two strings.

    >>> compare_lengths("hello", "hello")
    0
    >>> compare_lengths("hello", "world")
    1
    """
    return len(s1) - len(s2)

# Enter the strings
s1 = "hello"
s2 = "hello"

# Calling the function
print((compare_lengths(s1, s2)))

s1 = "hello"
s2 = "world"

# Calling the function
print((compare_lengths(s1, s2)))

#Example Output
# 0
# 0

#Remember to inspect code for bugs.