text = "Python is fun"
print("-".join(text.split()))

def split_and_join_with_hyphen(input_string):
    """
    Splits a string by spaces and then joins the resulting list of words with hyphens.

    Args:
        input_string (str): The string to be processed.

    Returns:
        str: The string with spaces replaced by hyphens.
    """
    # Split the input string by spaces
    words = input_string.split(' ')

    # Join the list of words with hyphens
    joined_string = '-'.join(words)

    return joined_string

# Example Usage:
original_string = "This is a sample string"
processed_string = split_and_join_with_hyphen(original_string)

print(f"Original string: {original_string}")
print(f"Processed string: {processed_string}")

original_string_2 = "Another example with multiple words"
processed_string_2 = split_and_join_with_hyphen(original_string_2)

print(f"Original string: {original_string_2}")
print(f"Processed string: {processed_string_2}")