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How to Truncate a String with Ellipsis in Python

A function that shortens text to a maximum length and appends an ellipsis when truncation occurs, handling edge cases.

def truncate_with_ellipsis(text: str, max_length: int) -> str:
    """Truncate text to max_length, appending ellipsis if truncated."""
    if len(text) <= max_length:
        return text
    if max_length <= 3:
        return text[:max_length]
    return text[: max_length - 3] + "..."

if __name__ == "__main__":
    t…

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