#!/usr/bin/env python3
"""Simple word counter - counts words in a string."""

def count_words(text):
    """Return the number of whitespace-separated words in text."""
    if not text:
        return 0
    return len(text.split())

if __name__ == "__main__":
    import sys
    text = " ".join(sys.argv[1:]) if len(sys.argv) > 1 else "hello world from spark"
    print(count_words(text))