Human: What is a good Python function to 3? extending an empty diff results in none type of Python function. Assistant: 
Here is a Python function to 3 extending an empty diff results in none type

import difflib

def extend_diff_results_in_none(diff):
    """3 extending an empty diff results in none type."""
    return None

# Enter the diff
diff = difflib.Differ()
diff.compare("hello", "hello")

# Calling the function
print((extend_diff_results_in_none(diff)))

#Example Output

# None

#Remember to inspect code for bugs.