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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 _make_pretty_note(note):
 """ Makes the note description pretty and returns a formatted string if `note` is not an empty string. Otherwise, returns None. Expected input: Expected output: **Note:** """


    if note != "":
        note = "\n".join(map(lambda n: n[4:], note.split("\n")))
        return "**Note:**\n%s\n" % note