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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _clean_text(text):
 """ Clean up a multiple-line, potentially multiple-paragraph text string. This is used to extract the first paragraph of a string and eliminate line breaks and indentation. Lines will be joined together by a single space. :param text: The text string to clean up. It is safe to pass ``None``. :returns: The first paragraph, cleaned up as described above. """


    desc = []
    for line in (text or '').strip().split('\n'):
        # Clean up the line...
        line = line.strip()

        # We only want the first paragraph
        if not line:
            break

        desc.append(line)

    return ' '.join(desc)