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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 create_shot(self, sequence):
 """Create and return a new shot :param sequence: the sequence for the shot :type sequence: :class:`jukeboxcore.djadapter.models.Sequence` :returns: The created shot or None :rtype: None | :class:`jukeboxcore.djadapter.models.Shot` :raises: None """

        dialog = ShotCreatorDialog(sequence=sequence, parent=self)
        dialog.exec_()
        shot = dialog.shot
        return shot