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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 shot_start_data(shot, role):
 """Return the data for startframe :param shot: the shot that holds the data :type shot: :class:`jukeboxcore.djadapter.models.Shot` :param role: item data role :type role: QtCore.Qt.ItemDataRole :returns: data for the start :rtype: depending on role :raises: None """

    if role == QtCore.Qt.DisplayRole:
        return str(shot.startframe)