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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 display(self, messages, sig="", debug=False):
 """Prints an iterator of messages."""

        full_message = "".join(
            sig + line for line in " ".join(
                str(msg) for msg in messages
            ).splitlines(True)
        )
        if not full_message:
            full_message = sig.rstrip()
        if debug:
            printerr(full_message)
        else:
            print(full_message)