How to build a text helper in Python for beginners

def clean_text(text: str) -> str:
    """Clean and normalize a text string."""
    text = text.strip()
    text = text.replace("  ", " ")
    text = text.capitalize()
    text = text.replace(".", ".")
    return text


def remove_punctuation(text: str) -> str:
    """Remove common punctuation marks from a string."""
    import string
    return ''.join(char for char in text if char not in string.punctuation)


def word_count(text: str) -> dict:
    """Count word frequencies in a text string."""
    words = text.lower().split()
    counts = {}
    for word in words:
        counts[word] = counts.get(word, 0) + 1
    return counts


def summarize(text: str, max_words: int = 10) -> str:
    """Create a brief summary of a text string."""
    words = text.split()
    if len(words) <= max_words:
        return text
    return ' '.join(words[:max_words]) + "..."



if __name__ == "__main__":
    sample = "  Python is a great language. python is fun!!   "
    print("Original:", repr(sample))
    print("Cleaned:", clean_text(sample))
    print("No punctuation:", remove_punctuation(sample))
    print("Word counts:", word_count(sample))
    print("Summary:", summarize(sample, max_words=5))