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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 backscatter(date=None, rows=None, return_format=None):
 """Returns possible backscatter data. This report only includes "syn ack" data and is summarized by source port. :param date: optional string (in Y-M-D format) or datetime.date() object :param rows: optional number of rows returned (default 1000) :returns: list -- backscatter data. """

    uri = 'backscatter'
    if date:
        try:
            uri = '/'.join([uri, date.strftime("%Y-%m-%d")])
        except AttributeError:
            uri = '/'.join([uri, date])
        if rows:
            uri = '/'.join([uri, str(rows)])
    return _get(uri, return_format)